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Expired Canadian patentCanada

Steroidal erythropoietic agents and therapeutic compositions and methods

CA 1069437 A · Owner: Akzona Incorporated · Inventors: Strade, Henry A.

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

The stimulation of erythropesis in humans and other warm-blooded animals is produced by administration of an effective amount of 3.alpha.-hydroxy- 5.beta.-estrane-17-one(19-noretiocholanolone). compositions containing this steroid are particularly advantageous in that they exhibit an unexpected low level of pyrogenicity as compared to etiocholanolone a known pyrogen.

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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 8, 1980
Term endedJanuary 8, 1997
Patent numberCA 1069437 A
Classification (IPC)A61K31/56

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 8, 1980Term endedJan 8, 1997

Sources & verification

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