Apparatus comprising means for mass spectrometry
CA 2101237 C · Owner: Muller, Amy Jean · Inventors: Muller, Amy Jean; Sinclair, James Douglas; Reents, William David, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an apparatus which can serve to detect count, size, discriminate and analyze the chemical composition of particles in the air or process gases. In a preferred embodiment, the particles enter via a capillary (4 or 5) into a differentially pumped chamber (6). A pulsed laser (10) which is continuously fired is focused at an opening in the chamber. When the particles come into the path of the laser beam, the particles are fragmented and ionized. A dual time of flight massspectrum is produced recorded with an oscilloscope (16) and analyzed with a computer (22). The mass spectrum information enables the determination of the chemical nature and concentration of the species of the …
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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 July 23, 1993 and granted April 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.