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Expired Canadian patentCanada

Mass spectrometer interface

CA 2470452 C · Owner: Ionics Mass Spectrometry Group, Inc. · Inventors: Jolliffe, Charles; Javahery, Gholamreza; Cousins, Lisa

CIPO record

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Abstract From the Canadian patent

A mass spectrometer interface, having improved sensitivity and reduced chemical background is disclosed. The mass spectrometer interface provides improved desolvation chemical selectivity and ion transport. A flow of partially solvated ions is transported along a tortuous path into a region of disturbance of flow where ions and neutral molecules collide and mix. Thermal energy is applied to the region of disturbance to promote liberation of at least some of the ionized particles from any attached impurities thereby increasing the concentration of the ionized particles having the characteristic m/z ratios in the flow. Molecular reactions and low pressure ionization methods can also be …

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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 June 9, 2004 and granted October 3, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 9, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 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.
FiledJune 9, 2004
GrantedOctober 3, 2017
Term endedJune 9, 2024
Patent numberCA 2470452 C
Classification (IPC)H01J49/04 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJune 9, 2004Patent grantedOct 3, 2017Term endedJune 9, 2024

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