Patent application number | Description | Published |
20080271748 | Method of and Arrangement for Removing Contaminants from a Substrate Surface Using an Atmospheric Pressure Glow Plasma - The present invention relates to a method of and arrangement for removing contaminants from a surface of a substrate by subjecting said substrate surface to an atmospheric pressure glow plasma. Said plasma is generated in a discharge space comprising a plurality of electrodes, by applying an alternating plasma energizing voltage to said electrodes causing a plasma current and a displacement current. Said plasma is stabilised by controlling said displacement current during plasma generation such that modification of properties of said substrate surface is prevented. | 11-06-2008 |
20080317974 | Method and Arrangement for Generating and Controlling a Discharge Plasma - Method and arrangement for controlling a discharge plasma in a discharge space ( | 12-25-2008 |
20090304949 | SHORT PULSE ATMOSPHERIC PRESSURE GLOW DISCHARGE METHOD AND APPARATUS - Method and plasma generating apparatus for generating an atmospheric pressure glow discharge plasma in a treatment space ( | 12-10-2009 |
20110042347 | METHOD AND APPARATUS FOR PLASMA SURFACE TREATMENT OF A MOVING SUBSTRATE - Method and plasma treatment apparatus for treatment of a substrate surface ( | 02-24-2011 |
20110089142 | METHOD AND APPARATUS FOR PLASMA SURFACE TREATMENT OF MOVING SUBSTRATE - Method and apparatus for treatment of a substrate surface ( | 04-21-2011 |
20110247368 | INTERNAL VAPOUR DEPOSITION PROCESS - A method for manufacturing a primary preform for optical fibres using an internal vapour deposition process, including the steps of: i) providing a hollow glass substrate tube having a supply side and a discharge side, ii) surrounding at least part of the hollow glass substrate tube by a furnace, iii) supplying doped or undoped glass-forming gases to the interior of the hollow glass substrate tube via the supply side thereof, iv) creating a reaction zone in which conditions such that deposition of glass will take place on the interior of the hollow glass tube are created, and v) moving the reaction zone back and forth along the length of the hollow glass substrate tube between a reversal point located near the supply side and a reversal point located near the discharge side of the hollow glass substrate tube, wherein, during at least part of step v), the gas flow comprises a first concentration of fluorine-containing compound when the reaction zone is moving in the direction of the discharge side. | 10-13-2011 |
20110247369 | INTERNAL VAPOUR DEPOSITION PROCESS - A method for manufacturing a primary preform for optical fibres using an internal vapour deposition process, including the steps of: i) providing a hollow glass substrate tube having a supply side and a discharge side, ii) surrounding at least part of the hollow glass substrate tube by a furnace, iii) supplying a gas flow, doped or undoped, of glass-forming gases to the interior of the hollow glass substrate tube via the supply side thereof, iv) creating a reaction zone in which conditions such that deposition of glass will take place on the interior of the hollow glass tube are created, and v) moving the reaction zone back and forth in longitudinal direction over the hollow glass substrate tube between a reversal point located near the supply side and a reversal point located near the discharge side of the hollow glass substrate tube. | 10-13-2011 |
20110302966 | METHOD FOR MANUFACTURING A PRIMARY PREFORM - The present invention relates to a method for manufacturing a primary preform for optical fibres, using an internal vapour deposition process, wherein a gas flow of doped undoped glass-forming gases is supplied to the interior of a hollow substrate tube having a supply side and a discharge side via the supply side thereof, wherein deposition of glass layers on the interior of the substrate tube is effected as a result of the presence of a reaction zone. | 12-15-2011 |
20120240636 | METHOD OF MANUFACTURING AN OPTICAL FIBRE, PREFORM AND OPTICAL FIBRE - A method for manufacturing an optical preform via an internal vapour deposition process, wherein during the inside deposition process the velocity of the reaction zone is set so that the velocity of the reaction zone over the length of the supply side-to-discharge side is higher than the velocity of the reaction zone over the length of the discharge side-to-supply side. | 09-27-2012 |
20120318025 | DEVICE AND METHOD FOR MANUFACTURING AN OPTICAL PREFORM - A device for contracting a hollow substrate tube made of quartz glass into an optical perform including a heat source movable relative to the longitudinal direction of the substrate tube and an insert tube positioned in the interior of the substrate tube, at one end thereof, provided with a central opening through which a gas is passed and supplied to the interior of the substrate tube. | 12-20-2012 |
20130067961 | METHOD FOR MANUFACTURING A PRIMARY PREFORM FOR OPTICAL FIBRES, PRIMARY PREFORM, FINAL PREFORM AND OPTICAL FIBRE - A method for manufacturing a primary preform for an optical fibre wherein conditions are created in the reaction zone such that one or more glass layer packages made up of at least two separate glass layers are deposited on the interior of the substrate tube. A method for manufacturing a final preform as well as primary preforms, final preforms and optical fibres obtained therewith. | 03-21-2013 |