Flame-retardant resin composition and molded article for electrical parts
CA 2026560 C · Owner: Shimotsuma, Sakae · Inventors: Suzuoka, Akihiro; Hatayama, Toshio; Shimotsuma, Sakae
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flame-retardant resin composition comprising (A) polybutylene terephthalate, a copolymer comprising at least 60.0% by weight of butylene terephthalate units and/or a thermoplastic polyester blend comprising at least 60.0% by weight of polybutylene terephthalate (B), 2.0 to 25.0% by weight, based on the total composition of a brominated epoxy resin type flame retardant and/or a brominated polycarbonate type flame retardant (C) 2.0, to 15.0% by weight, based on the total composition of a, flame retardant assistant composed mainly of antimony trioxide and/or antimony pentoxide, (D) 0.01 to 10.0% by weight, based on the total composition of a hydrous, basic carbonate compound of magnesium and …
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 September 28, 1990 and granted October 28, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 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.