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Expired Canadian patentCanada

Medical instrument, and method of manufacturing the same

CA 1324545 C · Owner: Terumo Kabushiki Kaisha · Inventors: Kasai, Masaaki

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

A medical instrument comprising a cylindrical member and a sliding member which is adopted to be slidably inserted into the cylindrical member such as a, syringe. In order to improve the slidability of the sliding member, a portion of the sliding member that contacts with the inner wall of the cylindrical member comprises a thermoplastic elastomer layer and a thermoplastic resin layer of low dynamic friction coefficient covering at least a portion of the elastomer layer.

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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 November 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 17, 1988
GrantedNovember 23, 1993
Term endedNovember 23, 2010
Patent numberCA 1324545 C
Classification (IPC)A61M5/31 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJune 17, 1988Patent grantedNov 23, 1993Term endedNov 23, 2010

Sources & verification

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