Patent Yard Sign in
Expired Canadian patentCanada

Collagen compositions and the method of preparing the same

CA 1073737 A · Owner: Union Carbide Corporation · Inventors: Higgins, Thomas E.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A homogeneous formable sqeous collagen composition having uniformly incorporated therein at least about 5% by weight based on the solids content thereof of an antiblock additive selected from the group consisting of fully esterified fatty acid esters of polyhydric alcohols, mineral oil and, mixtures of the ????, said collagen composition being formable into shaped collagen structures that exhibit improved antiblocking characteristics.

Read the whole patent

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 March 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 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—
GrantedMarch 18, 1980
Term endedMarch 18, 1997
Patent numberCA 1073737 A
Classification (IPC)A22C13/00 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMarch 18, 1980Term endedMarch 18, 1997

Sources & verification

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