Thermoplastic resin compositions
CA 2062275 C · Owner: Nakata, Akira · Inventors: Nakata, Akira; Yamamoto, Naoki; Koshirai, Atsunori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic resin composition comprising (A) 60 to 99 parts by weight of at least one thermoplastic resin selected from the group consisting of polyamide resins, polymethacrylimide resins and polyetherimide resins and (B) 1 to 40 parts by weight of a polyorganosiloxane graft copolymer obtained by graftpolymerizing one or more kinds of vinyl monomer containing at least an epoxy group-containing vinyl monomer onto a polyorganosiloxane compound rubber having a structure in which a polyorganosiloxane rubber component and a polyalkyl (meth)acrylate rubber component have been inseparably united with each other the total amount of both the components (A) and (B) being 100 parts by weight. The …
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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 March 4, 1992 and granted June 11, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 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.