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Expired Canadian patentCanada

Cured rubber skim stock compositions having improved metal adhesion and metal adhesion retention

CA 1182607 A · Owner: Firestone Tire & Rubber Company (The) · Inventors: Davis, James A.; Kang, Jung W.

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Abstract From the Canadian patent

This invention is directed toward a rubber skim stock composition and a product containing the skim stock having improved adhesion and adhesion retention with metallic reinforcement cords such as brassed steel. The invention composition comprises a vulcanizable rubber skim stock and an organic complex of cobalt or nickel with a dicarboxylic acid and is prepared by mixing the cobalt or nickel complex with the rubber skim stock prior to contacting the metallic reinforcement. Tests conducted with brass-plated steel cords showed satisfactory and improved metal adhesion, percent rubber coverage and metal adhesion retention with use of the rubber skim stock of this invention when compared to …

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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, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 25, 1982
GrantedFebruary 19, 1985
Term endedFebruary 19, 2002
Patent numberCA 1182607 A
Classification (IPC)C08J5/10 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedFeb 25, 1982Patent grantedFeb 19, 1985Term endedFeb 19, 2002

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