Flame-retardant thermoplastic resin composition
CA 2456423 A1 · Owner: Hashimoto, Tomomichi · Inventors: Miyatake, Nobuo; Tone, Hiroshi; Tsuneishi, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flame-retardant thermoplastic resin composition comprising 100 pts.wt. of thermoplastic resin (A); 0.1 to 30 pts.wt. of polyorganosiloxane-containing graft copolymer (B) obtained through one or more stage polymerization of monomer (B-3) containing polyfunctional monomer (B-2) having two or more polymerizable unsaturated bonds in its molecule (B-2) and/or vinyl monomer (B- 4) in the presence of polyorganosiloxane particles (B-1); 0.0005 to 5 pts.wt. of at least one metal salt (C) selected from the group consisting of alkali metal salts; and salts of metal of di- or higher valence and 0.05 to 2 pts.wt. of fluororesin (D).
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 April 25, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2025.
- 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.