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Expired Canadian patentCanada

Mass spectrometer

CA 2460469 C · Owner: Micromass Uk Limited · Inventors: Brown, Jeff; Bateman, Robert Harold

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A mass spectrometer is disclosed comprising an electric field region L2 wherein a time-varying electric field is applied thereto. In a mode of operation a pulse of ions 3 comprising ions having different mass to charge ratios passes through the electric field region L2 and the electric field is varied with time such that at least some of the ions 3 having different mass to charge ratios subsequently arrive at the extraction or acceleration region 10 of a Time of Flight mass analyser at substantially the same time.

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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 March 10, 2004 and granted October 2, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 10, 2004
GrantedOctober 2, 2012
Term endedMarch 10, 2024
Patent numberCA 2460469 C
Classification (IPC)H01J49/40 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMarch 10, 2004Patent grantedOct 2, 2012Term endedMarch 10, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.