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Expired Canadian patentCanada

Caprolactone polymer for suture coating

CA 1280256 C · Owner: Pfizer Hospital Products Group, Inc. · Inventors: Rhum, Joseph David; Messier, Kenneth Alan

CIPO record

Overview

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

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Abstract From the Canadian patent

Caprolactone Polymer For Suture Coating Abstract, High molecular weight caprolactone polymers are coated on surgical sutures to improve suture properties such as smooth surface, single knot slipdown two throw, knot slipdown for repositioning and three throw knot, security.

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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 February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.
FiledSeptember 9, 1986
GrantedFebruary 19, 1991
Term endedFebruary 19, 2008
Patent numberCA 1280256 C
Classification (IPC)A61L17/00 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedSep 9, 1986Patent grantedFeb 19, 1991Term endedFeb 19, 2008

Sources & verification

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