Apparatus and methods for trace component analysis
CA 2090616 C · Owner: Brigham Young University · Inventors: Sin, Chung Hang; Lee, Milton L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for analyzing chemical species includes an ion source (2) at or near ambient pressure and a time-of-flight mass spectrometer which receives the ions, created at the ion source (2) through an ion supersonic jet forming device (5, 6). The ion source (2) creates ions from neutral molecules in the sample to be analyzed or serves to introduce already formed ions into the mass spectrometer vacuum chamber (11). The ion source can use any of the known techniques for ion creation, including a corona discharge (3) or a 63 Ni Beta ion source (22). The ions are created and are then introduced into the vacuum region (11) of the mass spectrometer through a small orifice (6) which …
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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 August 28, 1991 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2013.
- 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.