Cycloolefin resin composition
CA 2078050 C · Owner: Yamamoto, Sanehiro · Inventors: Toyota, Akinori; Yamamoto, Sanehiro; Kimura, Toshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The cycloolefin resin compositions of the present invention comprise:, A cycloolefin resin selected from (a-1) a cycloolefin random copolymer having recurring units derived from a cycloolefin of a specific structure (a-2) a ring, opening (co)polymer of the cycloolefin (a-3) a, hydrogenation product of the ring opening (co)polymer and (a-4) a graft-modified product of the random copolymer (a- 1), the ring opening (co)polymer (a-2) and the hydrogenation product thereof (a-3);, B at least one of (b-1) an unmodified elastomer (b-, 2) a modified elastomer, (b-3) an unmodified crystalline polyolefin and (b-4) a modified crystalline polyolefin; and C a polyamide resin. Molded products formed from …
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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 September 11, 1992 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 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
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.