Thermoplastic polymer composition
CA 2071652 C · Owner: Nomura, Takao · Inventors: Tsutsumi, Ikuo; Nomura, Takao; Goto, Yukitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic polymer composition comprising (i) 100 parts by weight of a thermoplastic polymer component which comprises an ethylene-propylene rubber an ethylene copolymer and a propylene polymer (including an ethylene-propylene block copolymer) and (ii) 0 to 7, parts by weight of talc the thermoplastic polymer, component being composed of according to fractionation, using o-dichlorobenzene as a solvent component (A) which, is a component soluble in the solvent at 40°C component, (B) which is a component insoluble in the solvent at 40°C but soluble at 110°C, and component (C) which is a component insoluble in the solvent even at 110°C in such a proportion that the total amount of 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 June 19, 1992 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 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
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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.