Heat curable organopolysiloxane compositions, preformed latent platinum catalysts, and methods for making
CA 2080153 A1 · Owner: Sumpter, Chris A. · Inventors: Sumpter, Chris A.; Lawrence, William B.; Lewis, Larry N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RD-20,670, HEAT CURABLE ORGANOPOLYSILOXANE COMPOSITIONS, PREFORMED LATENT PLATINUM CATALYSTS, AND METHODS FOR MAKING, Abstract of the Disclosure Heat curable organopolysiloxane compositions are provided utilizing a vinyl silicone organopolysiloxane fluid a silicon hydride siloxane and an effective amount of a preformed latent platinum catalyst resulting from the reaction in the substantial absence of organopolysiloxane fluid, between a zero valent platinum catalyst and an organic nitrogen compound, such as 2,2'-bipyridine or diethyl azodicarboxylate.
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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 October 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2014.
- 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.