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Expired Canadian patentCanada

Use of therapeutic dosages for nitric oxide donors which do not significantly lower blood pressure or pulmonary artery pressure

CA 2467159 C · Owner: Piantadosi, Claude A. · Inventors: Piantadosi, Claude A.; Stamler, Jonathan S.; Dewhirst, Mark W.

CIPO record

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Abstract From the Canadian patent

Patients with pathologic conditions involving constriction or proliferation of smooth muscle or disease associated with cysteine containing proteins or who , are at risk for such, are administered a therapeutically effective amount of a nitric oxide (NO) donor which is insufficient to acutely lower mean arterial blood pressure or pulmonary artery pressure by more than 10%. In one subgenus NO donor is administered to modify red blood cell membrane receptors to prevent red blood cells from causing vasoconstriction. A related method which allows increased dosage of NO donor without acutely lowering mean arterial blood pressure comprises administering the NO donor into an artery of the …

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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 August 26, 2002 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 26, 2002
GrantedMarch 13, 2012
Term endedAugust 26, 2022
Patent numberCA 2467159 C
Classification (IPC)A61K31/53 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedAug 26, 2002Patent grantedMarch 13, 2012Term endedAug 26, 2022

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