Flame retarded gel compositions
CA 2103362 C · Owner: Soni, Pravin L. · Inventors: Soni, Pravin L.; Chiotis, Achilles; Cornelius, Rajendra S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flame retarded organopolysiloxane gels useful as sealants for articles designed for protective, sealing or insulative applications include (i) an organopolysiloxane gel having repeat units of structure (I) where each R is independently phenyl or C1-C4 alkyl or fluoroalkyl, at least 40 % of the R groups being phenyl; and (ii) an additive package mixed with the organopolysiloxane, which is (a) zinc oxide; (b) antemony oxide; (c) a brominated compound having a molecular weight of at least 450 and a bromine content of at least 40 weight %; (d) a chlorinated compound having a molecular weight of at least 300 and a chlorine content of at least 40 weight %; or (e) combinations of the above. …
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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, 1992 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.