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Expired Canadian patentCanada

Pneumatic radial tires for passenger cars

CA 1263835 C · Owner: Bundo, Motonori · Inventors: Hara, Hideo; Bundo, Motonori; Makino, Yoshihiro

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, A pneumatic radial tire for passenger car having an improved riding comfort against vibration without sustantially degrading the cornering stability is disclosed which, comprises a bead filler disposed between the carcass and its turnup, at least a part of which has a complex modulus of elasticity of 1x108?8x108 dyn/cm2 and sin .delta. of not less than 0.28 under a strain energy of 104 dyn/cm2. - 12 -

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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 December 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 12, 2006.
  • 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 10, 1985
GrantedDecember 12, 1989
Term endedDecember 12, 2006
Patent numberCA 1263835 C
Classification (IPC)B60C15/06

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedApril 10, 1985Patent grantedDec 12, 1989Term endedDec 12, 2006

Sources & verification

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