Curable composition
CA 2050899 C · Owner: Kanegafuchi Chemical Industry Co. Ltd. · Inventors: Fujita, Masayuki; Wakabayashi, Hiroshi; Homma, Michihide
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a curable composition capable of giving cured products drastically improved in resilience. This composition comprises (A) an oxypropylene polymer having at least one silicon atom-containing group with a hydroxyl group or a hydrolyzable group being bound to the silicon atom and having an Mw/Mn ratio of not mare than 1.6 and a number average molecular weight of not less than 6,000 (B) an, organic carboxylic acid salt of divalent tin and (C) an organic amine compound.
Read the whole patent
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 March 11, 1991 and granted January 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 2013.
- 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.