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Expired Canadian patentCanada

Vessel prosthesis impregnated with crosslinked gelatin and processfor the production thereof

CA 1283505 C · Owner: Intermedicat Gmbh · Inventors: Fleckenstein, Peter; Werner, Heinz-Helmut

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 invention relates to vessel prostheses formed from a porous basic body and an impregnating coating of crosslinked gelatin for sealing the pores. Crosslinking takes place accompanied by the use of a diisocyanate. The impregnating coating has good mechanical and physiological properties.

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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 April 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 11, 1987
GrantedApril 30, 1991
Term endedApril 30, 2008
Patent numberCA 1283505 C
Classification (IPC)A61L27/34 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 11, 1987Patent grantedApril 30, 1991Term endedApril 30, 2008

Sources & verification

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