Expired Canadian patentCanada
Pneumatic tire with puncture sealing feature
CA 1262788 C · Owner: The Goodyear Tire & Rubber Company · Inventors: Dobson, Robert L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pneumatic tire having an adherent sealant composite on its inner surface comprised of an admixture of (A) partially pre-crosslinked butyl rubber, (B) polybutene, (C) thermoplastic copolymer tackifying resin and (D) reinforcing carbon black.
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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 November 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 7, 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 19, 1985
GrantedNovember 7, 1989
Term endedNovember 7, 2006
Patent numberCA 1262788 C
Classification (IPC)C08K3/04 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.