Patent application number | Description | Published |
20100126726 | ALKALINE BETA-MANNANASE CONTAINING COMPOSITIONS USEFUL FOR THE HYDROLYSIS OF GUAR IN HIGH pH ENVIRONMENTS AND METHODS RELATED THERETO - Methods and compositions of fracturing formations are provided. The fracturing fluid includes an enzyme breaker that decreases the viscosity of the fracturing fluid over time. The enzyme breaker can be used in environments having a pH value ranging from about 7 to about 12. | 05-27-2010 |
20110092397 | Thermophilic Mannanohydrolase and Fracturing Fluids Containing the Same - A thermophilic mannanohydrolase enzyme may be used as an enzyme breaker for fracturing fluids containing hydratable polymers of guar and underivatized guar. The enzyme is effective in downhole temperatures exceeding 160° F. | 04-21-2011 |
20120031618 | Use of Hexose Oxidases to Create Hydrogen Peroxide in Aqueous Well Treatment Fluids - A hydrocarbon-bearing subterranean formation may be treated with an aqueous well treatment fluid which contains a hexose oxidase, such as glucose oxidase, mannose oxidase or galactose oxidase. The aqueous well treatment fluid further may contain a viscosifying polymer and an aldohexose. The aldohexose reacts in-situ with the hexose oxidase and molecular oxygen to produce hydrogen peroxide. The hydrogen peroxide may then act as a breaker. | 02-09-2012 |
20120055670 | METHOD OF FRACTURING USING MANNANOHYDROLASE ENZYME BREAKER - A thermophilic mannanohydrolase enzyme may be used as an enzyme breaker for fracturing fluids containing hydratable polymers of guar and underivatized guar. The amino acid sequence of the mannanohydrolase is at least 90% homologous to the amino acid sequence of SEQ ID NO:2. | 03-08-2012 |
20120111568 | COMPOSITIONS USEFUL FOR THE HYDROLYSIS OF GUAR IN HIGH pH ENVIRONMENTS AND METHODS RELATED THERETO - Methods and compositions of fracturing formations are provided. The fracturing fluid includes an enzyme breaker that decreases the viscosity of the fracturing fluid over time. The enzyme breaker can be used in environments having a pH value ranging from about 7 to about 12. | 05-10-2012 |
20120227971 | Sulfates and Phosphates as Allosteric Effectors in Mannanohydrolase Enzyme Breakers - The allosteric effectors, sulfate and phosphate, can be used with mannanohydrolase enzymes to better control the break of gelled fracturing fluids in wellbore operations. | 09-13-2012 |
20130312969 | USE OF HEXOSE OXIDASES TO CREATE HYDROGEN PEROXIDE IN AQUEOUS WELL TREATMENT FLUIDS - A hydrocarbon-bearing subterranean formation may be treated with an aqueous well treatment fluid which contains a hexose oxidase, such as glucose oxidase, mannose oxidase or galactose oxidase. The aqueous well treatment fluid further may contain a viscosifying polymer and an aldohexose. The aldohexose reacts in-situ with the hexose oxidase and molecular oxygen to produce hydrogen peroxide. The hydrogen peroxide may then act as a breaker. | 11-28-2013 |
20140041877 | Well Treatment Fluids Containing An Ylide Or A Vitamin B And Methods Of Using The Same - Viscosifying polymers are effectively degraded during a well treatment operation with an ylide breaker or a vitamin B cofactor. The vitamin B cofactor is an ylide, vitamin B | 02-13-2014 |
20150051391 | CONVERSION OF CELLULOSE INTO SIMPLE SUGARS - Cellulose may be converted into simple sugars such as glucose by contacting the cellulose with a compound effective to catalytically cleave the ether bonds of the cellulose. The compound may be a vitamin, a porphyrin, flavins, pyridoxal-containing molecules, and/or a compound containing at least one ylide functional group. The cellulose may be carboxymethyl cellulose (CMC), which may be made by reacting cellulose with chloroacetic acid and a base such as NaOH. The compound may be vitamins (B1, B2, B6, or B12), phosphonium ylides, sulfonium ylides, sulfoxonium ylides, carbonyl ylides, oxonium ylides, asomethine ylides, iminium ylides, halonium ylides, and combinations thereof. The free glucose may be used for fermentation, converted to a biofuel and for other applications. | 02-19-2015 |
20150129231 | METHOD OF TREATING PRODUCED OR FLOWBACK WATER WITH NUCLEOPHILIC AGENT TO DEACTIVATE BREAKER - Produced or flowback water from an underground reservoir having been treated with a fluid containing a viscosifying polymer and a vitamin B | 05-14-2015 |
20150284625 | COMPOSITION AND METHOD FOR TREATING SUBTERRANEAN FORMATIONS USING A GEL COMPOSITION CONTAINING NANOPARTICLES - A gel composition for use in a subterranean formation is provided. The gel composition comprises an aqueous fluid, a cross-linkable polymer soluble in the aqueous fluid, a cross-linking agent and nanoparticles. | 10-08-2015 |
20150291871 | ANTIFREEZE PROTEINS FOR USE IN DOWNHOLE FLUIDS - Antifreeze proteins having an ice-binding site, such as those derived from the | 10-15-2015 |
20150299556 | METHOD OF USING SOPHOROLIPIDS OR MANNOSYLERYTHRITOL LIPIDS AS ACID CORROSION INHIBITORS IN WELL TREATMENT OPERATIONS - Corrosive effects arising during well treatment applications are inhibited and/or prevented by introducing into the well composition containing a corrosion inhibitor of a sophorolipid or a mannosylerythritol lipid or a combination thereof. The composition may also contain a corrosion inhibitor intensifier. | 10-22-2015 |
20150300139 | METHOD OF USING SOPHOROLIPIDS IN WELL TREATMENT OPERATIONS - Recovery of fluids from a subterranean formation during a well treatment operation is enhanced by injecting into the formation a treatment fluid comprising a sophorolipid. | 10-22-2015 |
20160039697 | METHOD OF MITIGATING HYDROGEN SULFIDE OR MERCAPTAN CONTAMINATION WITH AN ENZYME BASED SCAVENGER - Hydrogen sulfide and mercaptans may be catalytically removed from a fluid stream by introducing to the fluid stream a sulfide quinone reductase (SQR) enzyme. | 02-11-2016 |
Patent application number | Description | Published |
20080210858 | High Stability Polyionic Liquid Salts - Polyionic liquid salts are provided comprising polycationic or polyanionic molecules. Further provided are solvents comprising one or more polyionic liquid salts, and the use of such polyionic liquid salts as stationary phases in gas chromatography, and as a reagent in electrospray ionization-mass spectrometry (ESI-MS). | 09-04-2008 |
20090145197 | Optically Enhanced Chiral Ionic Liquids - The invention relates to the use of optically enhanced chiral ionic liquids, particularly for gas chromatography and as a reaction solvent. Specific optically enhanced chiral cationic liquids are described as is a class of optically enhanced chiral anionic liquids. | 06-11-2009 |
20100148126 | GENOMIC SEQUENCING USING MODIFIED PROTEIN PORES AND IONIC LIQUIDS - The present invention is a nanopore stochastic sensing system comprising modified protein pores for detection and sequencing of oligonucleotides. The system comprises a genetically modified protein pore with a variety of non-covalent bonding recognition sites to significantly slow down the translocation of ssDNA in the pores. The present invention also describes identification and application of DNA fingerprints, which are a sequence of small current modulation events for the determination of the sequence of ssDNA molecules. In separate embodiments the present invention describes a system and a method for the detection of monovalent cations, liquid explosives, water-insoluble compounds, biomolecules and oligonucleotides. The system comprising a wild-type or genetically modified protein pore with or without a molecular adaptor. Analyte samples and mixtures are added along with specially synthesized ionic liquids. | 06-17-2010 |
20110024292 | COMPOSITIONS AND METHODS FOR CYCLOFRUCTANS AS SEPARATION AGENTS - The present invention relates to derivatized cyclofructan compounds, compositions comprising derivatized cyclofructan compounds, and methods of using compositions comprising derivatized cyclofructan compounds for chromatographic separations of chemical species, including enantiomers. Said compositions may comprise a solid support and/or polymers comprising derivatized cyclofructan compounds. | 02-03-2011 |
20120083603 | HIGH STABILITY POLYIONIC LIQUID SALTS - Polyionic liquid salts are provided comprising polycationic or polyanionic molecules. Further provided are solvents comprising one or more polyionic liquid salts, and the use of such polyionic liquid salts as stationary phases in gas chromatography, and as a reagent in electrospray ionization-mass spectrometry (ESI-MS). | 04-05-2012 |
20120211696 | HIGH STABILITY DIIONIC LIQUID SALTS - The present invention relates to diionic liquid salts of dicationic or dianionic molecules, as well as solvents comprising such diionic liquids and the use of such diionic liquids as the stationary phase in a gas chromatographic column. | 08-23-2012 |
20130074580 | METHODS FOR QUANTITATING WATER USING IONIC LIQUID SALTS - This disclosure provides methods and devices for quantitating, separating and/or detecting water in a liquid, gas or solid sample comprising one or more chemicals, the method comprising: providing the liquid, gas or solid sample comprising water and the one or more chemicals; and exposing said liquid, gas or solid sample to at least one solid support including at least one dicationic and/or tricationic species of Formula I or II adsorbed, absorbed or immobilized on the solid support. | 03-28-2013 |
20130138359 | Fluid Based RC Filter for Tuning Cut-Off Frequency and for Analytical Detection - An RC filter that is tunable in terms of its cut-off frequency comprising a drop placed on one or more dielectric layers, a conducting layer underneath the dielectric layer, a nonconducting layer underneath the conducting layer, and an external resistor attached to the drop via an electrode, wherein the cut-off frequency of the filter is tuned by changing the shape or composition of the drop and methods of using the filter as a detector. | 05-30-2013 |
20140021136 | CHROMATOGRAPHIC SEPARATION MATERIAL - The chromatographic separation material is a cyclofructan or a derivative of cyclofructan covalently bonded to a cross-linked, organic polymer. The separation material works well in hydrophilic interaction liquid chromatography. | 01-23-2014 |
20160041131 | METHODS FOR QUANTITATING WATER USING IONIC LIQUID SALTS - This disclosure provides methods and devices for quantitating, separating and/or detecting water in a liquid, gas or solid sample comprising one or more chemicals, the method comprising: providing the liquid, gas or solid sample comprising water and the one or more chemicals; and exposing said liquid, gas or solid sample to at least one solid support including at least one dicationic and/or tricationic species of Formula I or II adsorbed, absorbed or immobilized on the solid support. | 02-11-2016 |
Patent application number | Description | Published |
20090018877 | System and Method for Modeling Business Processes - According to one embodiment of the disclosure, a computerized method for modeling business processes includes receiving, at a computer, interaction data for interaction sessions. The interaction data includes session states indicative of session screens. The interaction data further includes transitions between the session states. The computerized method also includes identifying, at the computer, business processes based on the interaction data. The computerized method further includes identifying, at the computer, instances of the business processes in the interaction data. The computerized method further includes storing the instances as event records. The event records include a parameter indicative of a corresponding business process. The computerized method further includes generating a model based on the event records. | 01-15-2009 |
20120005690 | System and Method of Analyzing Business Process Events - A method includes receiving a plurality of events that each include a plurality of associated attributes, analyzing the plurality of associated attributes in order to identify at least two or more related events, determining a time associated with each of the at least two or more related events from the plurality of associated attributes, ordering the at least two or more related events in chronological order based on the determined time associated with each of the at least two or more related events, and manipulating at least one of the at least two or more related events based on the ordering. | 01-05-2012 |
20150263914 | Modeling Interactions with a Computer System - In certain embodiments, a method for modeling interactions with a computer system includes collecting interaction information for each of a number of interaction sessions with a computer system, each interaction session being associated with a corresponding agent system and including one or more states and one or more state transitions. The interaction information for an interaction session includes data for the one or more states and the one or more state transitions of the interaction session. The method further includes, for each of the interaction sessions, identifying the one or more states encountered during the interaction session based on the collected interaction information and generating, based on the one or more states encountered during the interaction session, a trace of the interaction session. The method further includes generating, based on the traces of the interaction sessions, a model of the interaction sessions, the model including the traces for each of the interaction sessions. | 09-17-2015 |
Patent application number | Description | Published |
20080200300 | CONTINUOUSLY VARIABLE TRANSMISSION - A continuously variable transmission (CVT) having a main shaft configured to support and position various components of the CVT. Shift cam discs cooperate with ball-leg assemblies to shift the transmission ration of the CVT. Load cam discs, a torsion disc, rolling elements, and a hub cap shell are configured to generate axial force, transmit torque, and manage reaction forces. In one embodiment, a splined input shaft and a torsion disc having a splined bore cooperate to input torque into the variator of the CVT. Among other things, various ball axles, axle-ball combinations, and reaction force grounding configurations are disclosed. In one embodiment, a CVT having axial force generation means at both the input and output elements is disclosed. | 08-21-2008 |
20080236319 | CONTINUOUSLY VARIABLE TRANSMISSION - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive idler-and-shift-cam assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed. | 10-02-2008 |
20080248917 | CONTINUOUSLY VARIABLE TRANSMISSION - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive idler-and-shift-cam assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed. | 10-09-2008 |
20080261771 | CONTINUOUSLY VARIABLE TRANSMISSION - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive idler-and-shift-cam assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed. | 10-23-2008 |
20100173743 | CONTINUOUSLY VARIABLE TRANSMISSION - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive power roller-leg assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed. | 07-08-2010 |
20130095977 | CONTINUOUSLY VARIABLE TRANSMISSION - A continuously variable transmission (CVT) having a main shaft configured to support and position various components of the CVT. Shift cam discs cooperate with ball-leg assemblies to shift the transmission ration of the CVT. Load cam discs, a torsion disc, rolling elements, and a hub cap shell are configured to generate axial force, transmit torque, and manage reaction forces. In one embodiment, a splined input shaft and a torsion disc having a splined bore cooperate to input torque into the variator of the CVT. Among other things, various ball axles, axle-ball combinations, and reaction force grounding configurations are disclosed. In one embodiment, a CVT having axial force generation means at both the input and output elements is disclosed. | 04-18-2013 |
20130146406 | CONTINUOUSLY VARIABLE TRANSMISSION - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive idler-and-shift-cam assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed. | 06-13-2013 |
20140148303 | CONTINUOUSLY VARIABLE TRANSMISSION - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive power roller-leg assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed. | 05-29-2014 |
Patent application number | Description | Published |
20090036950 | TRAINED AND ADAPTIVE RESPONSE IN A NEUROSTIMULATOR - A method sensing at least two physiological parameters and, for each of the at least two physiological parameters, generating a first series of signals representative of the physiological parameter sensed over a first time period, storing each of said first series of signals as a time sequence data stream, and determining when a physiological event has occurred in a patient. The method further comprises analyzing each of said time sequence data streams for a predetermined time interval preceding the occurrence of a physiological event to determine at least one marker as a predictor of the event, and again sensing the physiological parameters. Furthermore, the method comprises generating a second series of signals representative of the physiological parameter sensed, analyzing each of the second series of signals to determine whether the marker is present, and stimulating a cranial nerve when the marker is present in the second series of signals. | 02-05-2009 |
20100198313 | POWER SUPPLY MONITORING FOR AN IMPLANTABLE DEVICE - A method and an apparatus for determining a time period remaining in a useful life of an energy storage device in an implantable medical device. The method may include measuring a voltage of the energy storage device to produce a measured voltage, and comparing the measured voltage to a transition voltage. While the measured voltage is greater than or equal to the transition voltage, the time period remaining in the energy storage device's useful life is approximated based upon a function of charge depleted. While the measured voltage is less than the transition voltage, the time period remaining in the energy storage device's useful life is approximated based upon a higher order polynomial function of the measured voltage. The transition voltage corresponds to a predetermined point on a energy storage device voltage depletion curve representing the voltage across the energy storage device over time. | 08-05-2010 |
20100268495 | POWER SUPPLY MONITORING FOR AN IMPLANTABLE DEVICE - A method and an apparatus for projecting an end of service (EOS) and/or an elective replacement indication (ERI) of a component in an implantable device is provided. The method comprises measuring the measured voltage of the energy storage device, and determining whether the measured voltage is less than a transition voltage. When the measured voltage is less than the transition voltage, determining a time period remaining until an end of service of the energy storage device is based upon a function of the measured voltage. When the measured voltage is greater than or equal to the transition voltage, determining a time period remaining until an end of service of the energy storage device is based upon a function of the total charge depleted. The transition voltage is a voltage associated with the transition point of non-linearity in the battery voltage depletion curve. | 10-21-2010 |
20120130452 | SAFE-MODE OPERATION OF AN IMPLANTABLE MEDICAL DEVICE - An implantable medical device (IMD) may include a lead circuit including a first node configured to be coupled to a first lead that may be coupled to a first target tissue and including a second node configured to be coupled to a second lead that may be coupled to a second target tissue. The IMD may include an impedance unit that may determine at least one characteristic of coupled energy associated with the lead circuit, where the coupled energy may be produced by a source external to the IMD. The impedance unit may provide an impedance between the first node and the second node, where the impedance is selected based at least in part on a characteristic of the coupled energy. The impedance is selected to reduce the coupled energy or a negative effect associated with functionality of the IMD induced by the coupled energy. | 05-24-2012 |
Patent application number | Description | Published |
20090220307 | STRAKE SYSTEMS AND METHODS - There is disclosed a system comprising a structural element, at least one helical strake about the structural element, and at least one ramp to provide a transition from the structural element to the helical strake. | 09-03-2009 |
20090242207 | STRAKE SYSTEMS AND METHODS - There is disclosed a system comprising a structural element; at least one strake holder connected to the structural element; and at least one flexible helical strake connected to the at least one strake holder. | 10-01-2009 |
20100014922 | VIV AND/OR DRAG REDUCTION DEVICE INSTALLATION SYSTEMS AND METHODS - There is disclosed a system comprising a structural element; a transport tool carrying a plurality of VIV and/or drag reduction devices; and an installation tool adapted to remove a VIV and/or drag reduction device from the transport tool and to install the device around the structural element. | 01-21-2010 |
20100098497 | VORTEX INDUCED VIBRATION SUPPRESSION SYSTEMS AND METHODS - A system comprising a subsea structure beneath a body of water, subject to a water current; an installation vessel floating on the body of water; a line connected to the subsea structure and the installation vessel; and one or more vortex induced vibration suppression devices connected to the line, which have been lowered from the vessel to be installed on the subsea structure. | 04-22-2010 |
20100150662 | VORTEX INDUCED VIBRATION SUPPRESSION SYSTEMS AND METHODS - A system comprising a subsea structure defining an interior of the system, the structure subject to a water current; a sleeve exterior to the subsea structure, covering at least a portion of an outside surface of the subsea structure; and a vortex induced vibration suppression device exterior to the sleeve. | 06-17-2010 |
20120006554 | METHODS AND DEVICES OF CLEANING SUBSEA STRUCTURES - A tool for cleaning subsea structures, the tool comprising a frame comprising a stationary frame portion; and a rotating frame portion rotationally connected to the stationary frame portion; and at least one cleaning device attached to the rotating frame portion. | 01-12-2012 |