Patent application number | Description | Published |
20080224032 | Micromachined field asymmetric ion mobility filter and detection system - A micromechanical field asymmetric ion mobility filter for a detection system includes a pair of spaced substrates defining between them a flow path between a sample inlet and an outlet; an ion filter disposed in the path and including a pair of spaced filter electrodes, one electrode associated with each substrate; and an electrical controller for applying a bias voltage and an asymmetric periodic voltage across the ion filter electrodes for controlling the paths of ions through the filter. | 09-18-2008 |
20090189064 | ULTRA COMPACT ION MOBILITY BASED ANALYZER APPARATUS, METHOD, AND SYSTEM - An ultra compact ion mobility based analyzer in a multilayered chip assembly employing various features such as a ion flow generator to propel ions through an ion mobility based filter and, thereby, reduce analyzer size, cost, and power requirements. | 07-30-2009 |
20100282961 | Differential mobility spectrometer pre-filter assembly for a mass spectrometer - A pre-filter assembly including a differential mobility spectrometer (DMS) that is configured to be in-line with a mass spectrometer (MS) such that the MS continuously receives carrier flow from the DMS when the DMS filtering fields are removed. | 11-11-2010 |
20110042561 | METHODS AND APPARATUS FOR ENHANCED ION BASED SAMPLE DETECTION USING SELECTIVE PRE-SEPARATION AND AMPLIFICATON - The invention relates generally to ion mobility based systems, methods and devices for analyzing samples and, more particularly, to sample pre-separation and amplification. | 02-24-2011 |
20110101214 | COUPLING DIFFERENTIAL MOBILITY BASED AMBIENT PRESSURE ION PREFILTERING AND ION FOCUSING AT LOW FLOW RATES FOR A PORTABLE MASS SPECTROMETER - A sample analysis apparatus and system including an ion inlet, an ion detector and an ion focusing assembly for converging a plurality of ion streams from the ion inlet into at least one focused ion stream. | 05-05-2011 |
20110133076 | TANDEM DIFFERENTIAL MOBILITY SPECTROMETERS AND MASS SPECTROMETER FOR ENHANCED ANALYSIS - The invention relates generally to systems, methods and devices for analyzing samples and, more particularly, to systems using a differential mobility spectrometer in combination with a mass analyzer to enhance the analysis process of constituents of a sample. | 06-09-2011 |
20120025070 | METHOD AND APPARATUS FOR ENHANCED ION MOBILITY BASED SAMPLE ANALYSIS USING VARIOUS ANALYZER CONFIGURATIONS - A ion mobility-based analyzer system including a first ion mobility-based filter for passing selected ions through a time-varying field where the time-varying field being compensated by an adjustable compensation setting. The analyzer also includes a second ion mobility-based filter for receiving a first portion of ions from the first ion mobility-based filter. The second ion mobility-based filter includes a voltage gradient for separating ions of the first portion of ions where the ions have associated retention times based on their times of flight through the voltage gradient. The second ion mobility-based filter includes a detector for detecting the ions at their retention times. The analyzer system further includes a display that displays the detected ions in a plot relating the retention times of the ions in the second ion mobility-based filter with compensation settings of the first ion mobility-based filter. | 02-02-2012 |
20120160997 | Non-radioactive ion sources with ion flow control - An ion-based analyzer including a non-radioactive ion source, an ion generation chamber for generating ions, a sample ionization chamber and a controller for employing ion flow control, an ion-based filter, and a detector for analyzing a sample. | 06-28-2012 |