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Expired Canadian patentCanada

Method of forming a laminate and the product thereof

CA 1313492 C · Owner: Armco Inc. · Inventors: Schoen, Jerry W.

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

Method for forming a laminate and a product formed thereof. A thin layer of oil is applied to a facing surface of at least one of a plurality of adjacent laminations. The laminations are passed between a pair of rollers which apply sufficient pressure to remove excess oil between the facing surfaces. The air between the facing surfaces is displaced and the remaining oil forms a seal to prevent reentry of the air. The laminate is tightly held together to permit handling or fabrication without delamination.

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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 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 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.
FiledApril 6, 1988
GrantedFebruary 9, 1993
Term endedFebruary 9, 2010
Patent numberCA 1313492 C
Classification (IPC)B32B15/04 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedApril 6, 1988Patent grantedFeb 9, 1993Term endedFeb 9, 2010

Sources & verification

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