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Expired Canadian patentCanada

Protein absorption enhancing agents

CA 1264030 C · Owner: Sobel, Burton E. · Inventors: Sobel, Burton E.; Sarnoff, Stanley Jay

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The absorption rate of proteins with medicinal properties in the blood is enhanced by administering the protein intramuscularly together with an absorption enhancing agent, preferably hydroxylamine or a salt thereof, most preferably hydroxylamine hydrochloride.

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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 December 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2006.
  • 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 8, 1985
GrantedDecember 27, 1989
Term endedDecember 27, 2006
Patent numberCA 1264030 C
Classification (IPC)A61K31/41 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedAug 8, 1985Patent grantedDec 27, 1989Term endedDec 27, 2006

Sources & verification

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