Owlstone Limited Patent applications |
Patent application number | Title | Published |
20160025679 | INTERDIGITATED ELECTRODE CONFIGURATION FOR ION FILTER - An ion filter and a method of manufacturing an ion filter. The method including providing a monolithic structure; selectively removing regions of the structure, to form a pair of electrodes defining at least one ion channel therebetween. The electrodes are preferably mechanically connected at one or more locations by a portion of the structure; wherein the connecting portion of the structure provides a higher electrical impedance than the filter would provide without such a mechanical connection, to thereby electrically separate the electrodes. | 01-28-2016 |
20140300369 | SENSOR APPARATUS AND METHOD FOR USE WITH GAS IONIZATION SYSTEMS - An ion mobility gas detector apparatus including a detector core, an inlet gas path, an exhaust gas path, a source of diluent gas, and at least one or more sensors for measuring temperature, pressure and humidity of gas streams. Further included is a mixing mechanism adapted to mix at least first and second gas streams in response to one or more sensor measurements. A controller is provided for applying drive signals to the detector core. | 10-09-2014 |
20140299759 | CORONA IONIZATION DEVICE AND METHOD - A corona discharge ionizer device which emits ions generated by corona discharge to a gas flow to be ionized includes a discharge electrode having a pin configured tip portion. A second grid electrode positioned at a spaced distance from the discharge electrode is provided. The grid electrode is preferably formed from a sheet configured material which has at least one hole formed therein adapted and configured to permit the gas flow to pass therethrough. A power supply is coupled to the discharge electrode and grid electrode configured cause ion emission from the discharge electrode. The power supply is preferably an alternating current power supply configured to produce an alternating electric field region in close proximity to the tip portion of the discharge electrode sufficient to cause avalanche breakdown in the gas flowing in close proximity to the tip portion of the discharge electrode. | 10-09-2014 |
20100301197 | MONITORING SYSTEM - A system and method for monitoring user exposure to toxic compounds are described. Compounds monitored are preferable volatile organic compounds including benzene, toluene, or xylene. An adsorbent badge is provided for wearing by a user; this is subsequently analysed by means of a field asymmetric ion mobility spectrometer. Multiple badges may be provided to different users, each associated with a unique user identifier. | 12-02-2010 |