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Expired Canadian patentCanada

Cellulose based fibers and bonded composites of the fibers in vinyl chloride polymer characterized by a silane bonding agent

CA 1340707 C · Owner: Kokta, Bohuslav V. · Inventors: Kokta, Bohuslav V.

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

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Abstract From the Canadian patent

Cellulose fibers are treated with silane bonding agent or silane bonding agent and peroxyde. Composites are made from cellulose fibers dispersed in a matrix of plasticized vinyl chloride polymer and bonded thereto with silane, bonding agent. The composites can be molded or extruded to produce useful articles.

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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 August 17, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 17, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 8, 1986
GrantedAugust 17, 1999
Term endedAugust 17, 2016
Patent numberCA 1340707 C
Classification (IPC)C08L27/06 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005200820112014Application filedJuly 8, 1986Patent grantedAug 17, 1999Term endedAug 17, 2016

Sources & verification

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