Method and apparatus to increase the resolution and widen the range of differential mobility analyzers (dmas)
CA 2465166 A1 · Owner: Labowsky, Michael J. · Inventors: Neilson, G. Wayne; Schmitt, Jerome J.; De La Mora, Juan Fernandez
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A differential mobility analyzer (DMA) for separating charged particles or ions suspended in a gas and a method of using the DMA for separating such particles. The invention includes various means for increasing the resolution of the DMA by stabilizing the laminar flow within the DMA and by allowing unusually large flow velocities. These means include several screens (2,3) of high uniformity, a converging section (5) and a flow constriction leading to , a nozzle (8) that isolates the working region (13) from other regions further downstream in order to avoid or reduce perturbations on the axisymmetry of steadiness of the flow in the working region (13).
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 1, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2024.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.