Polyolefin resin composition
CA 2064750 C · Owner: Moriya, Satoru · Inventors: Moriya, Satoru; Ishimoto, Akio; Takahashi, Mamoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses a polyolefin resin composition comprising a specific cycloolefinbased polymer (a), a graft-modified elastomer (b) and a compound (c) having one amino group in the molecule and containing, based on the total amount of the components (a), (b) and (c), 50 to 95 % by weight of the component (a), 1 to 50 % by weight of the component (b) and 0.01 to 45 % by weight of the component (c). This polyolefin resin composition is improved particularly in mechanical properties such as impact strength, etc. while retaining excellent properties of the cycloolefin-based polymer (a).
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 June 5, 1991 and granted March 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2013.
- 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.