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Expired Canadian patentCanada

Resilient heat-resistant laminated composite

CA 1076943 A · Owner: Coors Porcelain Company · Inventors: Wieczorek, Leonard

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

of Disclosure, In accordance with the invention there is, provided an assembly of two members having therebetween a resilient heat-resistant laminated composite consisting essentially of a plurality of layers of graphite cloth bonded together by silicone rubber, the graphite cloth forming from about 60% to 90% by volume of the composite.

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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 May 6, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 6, 1980
Term endedMay 6, 1997
Patent numberCA 1076943 A
Classification (IPC)B32B5/02

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMay 6, 1980Term endedMay 6, 1997

Sources & verification

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