Polyarylene sulfide resin composition and process for producing the same
CA 2031630 C · Owner: Sano, Hiroyuki · Inventors: Sano, Hiroyuki; Serizawa, Hajime; Nonaka, Toshifumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyarylene sulfide composition comprises (A) 99 to 20 parts by weight of polyarylene sulfide (B) 1 to 80 parts, by weight of a polyamide and (C) 0.01 to 5 parts by weight based on 100 parts by weight of (A) and (B) in total of an, alkoxysilane. It may further comprise (D) up to 400 parts by weight of a filler in the form of fiber particles or, plates. It can be produced by blending (A) (B), (C) and, (D) with one another and melt-kneading the blend for at least 30 seconds while heated.
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 December 6, 1990 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 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.
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.