Organosilane compounds
CA 1087203 A · Owner: The Procter & Gamble Company · Inventors: Heckert, David C.; Watt, David M. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Novel compounds of the formula, or siloxane oligomers thereof wherein R1 is an alkyl group, containing 1 to 4 carbon atoms (CH3)3Si or Z(OCxH2x)m, where x is 2 to 4 m is 1 to 20, Z is hydrogen, an alkyl, group containing 1 to 18 carbons or an acyl group containing 1 to 4 carbon atoms; a is 0 to 2; R2 is an alkyl group containing 1 to 18 carbon atoms; R3 is an alkyl group containing 1 to 18 carbon atoms; R4 is an alkyl, aryl or arylalkyl group containing 1 to 12 carbon atoms, a carboxy-substituted alkyl group containing 1 to 4 carbon atoms, (CxH2xO)mZ where x, m, and Z are as defined above or oxygen provided, only one R4 is oxygen and that when R4 is oxygen there …
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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 October 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.