Interpretation of mass spectra of multiply charged ions of mixtures
CA 2075046 C · Owner: Finnigan Corporation · Inventors: Zhou, Xiao-Guang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chemical mixture is conveyed to a multiple charging apparatus (22), where multiply charged ions are formed. The multiply charged ions are then conveyed to a mass spectrometer (24) which generates mass/charge spectrum data (36) relating intensity to a range of mass/charge values. This mass/charge spectrum data is transferred to generate mass spectrum data (40) relating intensity to a range of mass values. Thereafter, a set of known masses (44) are identified from the mass spectrum data by associating each peak intensity value in the spectrum with its molecular mass. A list of mass/charge ratios (50) for each of the identified masses is formed and stored. Next, a range of mass/charge ratios …
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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 December 12, 1991 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 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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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.