Thermoplastic resin composition
CA 2012265 C · Owner: Sumitomo Dow Limited · Inventors: Kodama, Mikio; Abe, Katsuji; Yano, Motoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1-, The present invention is directed to a thermoplastic resin composition comprising (A) 5 to 50 parts by weight of a saturated polyester resin (B) 10 to, 70 parts by weight of a graft polymer obtainable by polymerizing an aromatic vinyl compound and an unsaturated nitrile in the presence of a conjugated dime base rubber (C) 10 to 70 parts by weight of an .alpha.-alkylstyreneunsaturated nitrile copolymer comprising 50 to 85 % by weight of the .alpha.-alkylstyrene and 50 to 15 % by weight of the unsaturated nitrile, provided that the total amount of the components (A), (B) and (C) is 100 parts by weight wherein the content of the conjugated dime base rubber in the composition is from 5 to …
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 15, 1990 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 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.
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.