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Expired Canadian patentCanada

Self-lubricating metallic matrix for injection molding

CA 1315058 C · Owner: Nakamura, Susumu · Inventors: Nakamura, Susumu; Yokio, Koichi

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 self-lubricating metallic matrix for injection molding, comprising an element having a lubrication requiring sliding wall in which a plurality of receiving holes are formed in such a positional relationship that end faces thereof may be positioned in a partially overlapping relationship with each other in the direction of such sliding movement, and a solid lubricant received in the receiving holes of the element.

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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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 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.
FiledNovember 24, 1988
GrantedMarch 30, 1993
Term endedMarch 30, 2010
Patent numberCA 1315058 C
Classification (IPC)B29C45/33 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 24, 1988Patent grantedMarch 30, 1993Term endedMarch 30, 2010

Sources & verification

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