Expired Canadian patentCanada
Primer composition used for adhesion
CA 1191297 A · Owner: Toray Silicone Company, Ltd. · Inventors: Yasuda, Sadami; Hamada, Mitsuo
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mixture of an alkoxy containing silicon-compound a, hydroperoxide, and organic solvent is a primer composition useful for bonding heat curing silicone rubber especially, fluorosilicone rubber, to a substrate.
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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 July 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2002.
- 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 4, 1982
GrantedJuly 30, 1985
Term endedJuly 30, 2002
Patent numberCA 1191297 A
Classification (IPC)C09J5/02 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.