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Expired Canadian patentCanada

Motocross tire for motorcycles

CA 1104046 A · Owner: Bridgestone Tire Company Limited · Inventors: Hayakawa, Toshio; Yoshida, Shoji

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 motocross tire for motorcycles comprising a tread pattern including blocks divided into a plurality of block groups. The block groups has adjacent blocks whose centers are circumferentially displaced by 3 to 25 mm. All of the blocks are arranged such that a ratio of a ground contact area of the blocks to an apparent ground contact area of the tire changes within a range of ?0.05 in response to a change of the camber angle of the tire.

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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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledNovember 2, 1979
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1104046 A
Classification (IPC)B60C11/04 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedNov 2, 1979Patent grantedJune 30, 1981Term endedJune 30, 1998

Sources & verification

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