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Expired Canadian patentCanada

Polyorganosiloxane compositions

CA 1210545 A · Owner: Toray Silicone Company, Ltd. · Inventors: Suzuki, Toshio

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, A desirable thixotropic character is imparted to a curable liquid composition comprising a vinyl-containing polyorganosiloxane, a polyorganosiloxane containing at least two silicon-bonded hydrogen atoms per molecule a, platinum-containing catalyst and a finely divided silica filler by including in said composition from 0.05 to 10% based on the weight of said composition of a, polyorganosiloxane wherein each molecule contains at least 0.5% by weight of hydroxyl groups. (TOR4)

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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 26, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 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.
FiledMarch 23, 1984
GrantedAugust 26, 1986
Term endedAugust 26, 2003
Patent numberCA 1210545 A
Classification (IPC)C08L83/04

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMarch 23, 1984Patent grantedAug 26, 1986Term endedAug 26, 2003

Sources & verification

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