Patent Yard Sign in
Expired Canadian patentCanada

Process for preparing bovine pericard materials and use thereof

CA 1339093 C · Owner: B. Braun Melsungen Aktiengesellschaft · Inventors: Scholl, Edmund; Beyer, Helmut; Waldert, Helmut

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

Disclosed is a process for preparing bovine pericard material by subjecting raw bovine pericard tissue to operations of wet-chemical processing oxidative, bleaching, washing out, de-greasing drying and sterilizing, wherein the collagen contained in the bovine pericard is worked up by way of a definite sequence of process steps. The bovine pericard material obtained by the process according to the invention can be advantageously employed for implants and transplants in human and veterinary medicine.

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 July 29, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 1989
GrantedJuly 29, 1997
Term endedJuly 29, 2014
Patent numberCA 1339093 C
Classification (IPC)A61L27/00 +1 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedSep 29, 1989Patent grantedJuly 29, 1997Term endedJuly 29, 2014

Sources & verification

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