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Expired Canadian patentCanada

Room temperature vulcanizable polyorganosiloxane compositions which are paintable following curing

CA 1204245 A · Owner: Toray Silicone Company, Ltd. · Inventors: Fukayama, Miyoji; Ichiijo, Chikara

CIPO record

Overview

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Abstract From the Canadian patent

Abstract, Paintable, cured polyorganosiloxane sealants are prepared at room temperature from room temperature curable compositions containing a hydroxyl-terminated polyorganosiloxane, an organosilicon compound containing at least two amido groups, aminoxy groups or combinations thereof, per molecule and characterized by a substituted alcohol where the substituent is acyloxy alkoxycarbonyl, cyano, mercapto, or the combination of a carbon-to-carbon triple bond and an ether-type oxygen atom, where each Y and Z are individually selected from the group consisting of hydrogen hydrocarbyl and halohydrocarbyl.

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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 May 6, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 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.
FiledJuly 5, 1983
GrantedMay 6, 1986
Term endedMay 6, 2003
Patent numberCA 1204245 A
Classification (IPC)C08K5/00 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJuly 5, 1983Patent grantedMay 6, 1986Term endedMay 6, 2003

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