Fluoroelastomer composition with improved bonding properties
CA 2017628 C · Owner: Grootaert, Werner M. A. · Inventors: Millet, George H.; Grootaert, Werner M. A.; Kolb, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A curable fluoroelastomer composition comprising: (A) fluoroelastomer gum comprising interpolymerized repeating units derived from vinylidene fluoride tetrafluoroethylene, and copolymerizable hydrocarbon olefin, (s) polyhydroxy compound, (C) organo-onium compound, and (n) fluoroaiiphatic sulfonyl compound adhesion promoter, where the amount of fluoroaliphatic sulfonyl compound in the elastomeric composition is sufficient to result in greater adhesion of the elastomeric composition, after curing, to an inorganic surface coated with a primer composition comprising aminosilane compound than can be achieved between an elastomeric composition comprising (A), (B), and (C), after curing and an, …
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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
- Filed May 28, 1990 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2012.
- 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.