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Expired Canadian patentCanada

Heat curable silicones having improved room temperature stability

CA 1261502 A · Owner: Dow Corning Corporation · Inventors: Peters, Yolanda A.; Chandra, Grish; Lo, Peter Y.K.

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, Improved inhibitor systems are disclosed for the reaction of silicon hydride containing silicones with vinyl containing and/or hydroxyl containing silicones. The improved inhibitors are mixtures of conjugated ane-ynes and vinylcyclosiloxanes. Inhibition of cure at room temperature is combined with rapid cure at elevated temperature when the improved inhibitors are used.

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • 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 21, 1984
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1261502 A
Classification (IPC)C08L83/07 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedDec 21, 1984Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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