Multiple reaction monitoring mass spectrometer and method
CA 2234754 A1 · Owner: Jolliffe, Charles · Inventors: Jolliffe, Charles; Thomson, Bruce
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of operating a mass spectrometer system in which ions are trapped in a first quadrupole mass spectrometer operated in an RF-only mode, at relatively high pressure and all ions except parent ions, are then removed therefrom using FNF or a similar technique. The ions are then fragmented in the first spectrometer using radial or axial, excitation or other desired method and are then transferred to a resolving mass spectrometer for analysis.
Read the whole patent
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 April 14, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2020.
- 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
Timeline From CIPO dates
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.