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Expired Canadian patentCanada

Method of preparing composition for the tire tread cap

CA 1266933 C · Owner: Miller, Richard L. · Inventors: Palombo, James L.; Miller, Richard L.

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 pneumatic tire is disclosed which exhibits a good balance of rolling resistance, skid resistance wear and handling. The, rubber compound of the tread cap of the tire contains minor amounts by weight of finely divided high molecular weight high density polyethylene optionally with additional process oil.

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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 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 18, 1986
GrantedMarch 20, 1990
Term endedMarch 20, 2007
Patent numberCA 1266933 C
Classification (IPC)B60C1/00 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedDec 18, 1986Patent grantedMarch 20, 1990Term endedMarch 20, 2007

Sources & verification

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