Polyolefin resin composition, process for the preparation thereof and molded article made thereof
CA 2097941 C · Owner: Hara, Kazuhiro · Inventors: Hara, Kazuhiro; Okimura, Yoshihiko; Aoyama, Taizo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyolefin resin composition which, comprises: (A) a polyolefin, (B) 0.1 to 100 parts of a core-shell graft copolymer prepared by graft copolymerizing (b) 5 to 60 parts by weight of a monomer component comprising a copolymerizable vinyl compound selected so that the glass transition temperature of a polymer of said monomer component alone is not less than 25° C , onto (a) 40 to 95 parts by weight of a cross linked rubber-like polymer having a glass transition temperature of not more 25°C and , (C) 0 to 400 parts of an inorganic filler said parts of , (B) and (C) being parts by weight per 100 parts by weight of (A). The above-mentioned polyolefin resin composition shows the excellent …
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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 8, 1993 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2015.
- 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.