Ionization polarity prediction of compounds for efficient mass spectrometry
CA 2353200 A1 · Owner: Pfizer Products Inc. · Inventors: Brockman, Adam Hale; Blake, James Francis Jr.; Potter, David Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for segregating compounds by ionization polarity for use in polarity sensitive analysis thereof comprising the steps of: a) selecting a data base of a statistically significant group of compounds and determining the polarization, positive or negative at which each of said , compounds is ionized; b) structurally analyzing the individual compounds to determine structural characteristics common to a majority of compounds which ionize at positive polarity and to, determine structural characteristics common to a majority of compounds which ionize at, negative polarity, as polarization determinants; c) sequentially arranging the polarization determinants in classification trees, …
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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 18, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.