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Expired Canadian patentCanada

Pneumatic tire having anti-transverse skid property for vehicles which run at high speed under heavy load

CA 1108972 A · Owner: Bridgestone Tire Company Limited · Inventors: Abe, Masaru; Sakai, Yoshihiro

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 having anti-transverse skid property for vehicles which run at a high speed under a heavy load comprising a depression provided in the tire sidewall near the shoulder and for circumferentially dividing the tire sidewall near the shoulder into a number of lands and a shoulder side groove provided in the land the edge, lines formed between the wall of the depression and shoulder side groove and the tire sidewall outer surface being so designed that the anti-transverse skid property of the tire is improved.

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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 September 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 20, 1979
GrantedSeptember 15, 1981
Term endedSeptember 15, 1998
Patent numberCA 1108972 A
Classification (IPC)B60C11/01

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedAug 20, 1979Patent grantedSep 15, 1981Term endedSep 15, 1998

Sources & verification

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