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Expired Canadian patentCanada

Prostaglandins e and anti ulcer agents containing same

CA 1323364 C · Owner: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo · Inventors: Ueno, Ryuzo; Kato, Ichie; Ueno, Ryuji

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

Abstract:, The novel 13 14-dihydro-15-keto prostaglandins E, of the invention have remarkable preventive effects against ulcers. Further, the novel 13,14-dihydro- 15-keto-prostaglandins E of the invention have the advantage that they have none of the side effects which prostaglandin E intrinsically has, or can remarkably reduce such effects of prostaglandin E. Therefore the, novel 13, 14-dihydro-15-keto prostaglandins E of the invention are effective for animal and human use in the treatment and prevention of ulcers, for example duodenal ulcers and gastric ulcers.

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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

  • Granted October 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 26, 1988
GrantedOctober 19, 1993
Term endedOctober 19, 2010
Patent numberCA 1323364 C
Classification (IPC)C07C405/00 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJan 26, 1988Patent grantedOct 19, 1993Term endedOct 19, 2010

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