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Expired Canadian patentCanada

Rubber composition containing non-tackiness-imparting agent and conveyor belt having surface layer made of vulcanizate of said composition

CA 1206664 A · Owner: Bando Chemical Industries, Ltd. · Inventors: Wada, Noriaki

CIPO record

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Abstract From the Canadian patent

A rubber composition comprising (1) 100 parts by weight of at least one organic rubber selected from natural rubber and organic synthetic rubbers or 100 parts by weight of a rubber mixture of 98 to 80% by weight of said organic rubber and 2 to 20% by weight of a silicone raw rubber having a molecular weight of 100,000 to 1,000,000 and (2) 0.5 to 50 parts by weight of at least one hon-tackiness-imparting agent selected from (a) fatty acid amides, (b) fatty acid glycerides and (c) polyhydric alcohols, polyhydric thioalcohols and monoalkyl ethers thereof represented by the general formula (HX)n-R-XR' where X is an oxygen or a sulfur atom, R is an alkylene group which may contain an ether or a …

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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 24, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 13, 1983
GrantedJune 24, 1986
Term endedJune 24, 2003
Patent numberCA 1206664 A
Classification (IPC)C08K5/20 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 13, 1983Patent grantedJune 24, 1986Term endedJune 24, 2003

Sources & verification

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