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Expired Canadian patentCanada

Fiber for reinforcing rubber products

CA 2489482 C · Owner: Ando, Kimihiro · Inventors: Ando, Kimihiro

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

Fiber for reinforcing rubber products, which comprises fiber coated with a coating film formed by a treating agent wherein the treating agent comprises a rubber latex containing at least a vinylpyridine/styrene/butadiene terpolymer a latex of an acrylonitrile/butadiene/styrene terpolymer and a water-soluble condensate of resorcinol and formaldehyde.

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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

  • Filed December 9, 2004 and granted March 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 9, 2004
GrantedMarch 6, 2012
Term endedDecember 9, 2024
Patent numberCA 2489482 C
Classification (IPC)D01F6/22 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 9, 2004Patent grantedMarch 6, 2012Term endedDec 9, 2024

Sources & verification

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