Amorphous polyolefin resin composition
CA 2377411 A1 · Owner: Kawai, Hidenori · Inventors: Miyamoto, Masahiro; Kawai, Hidenori; Kadokura, Mamoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A noncrystalline polyolefin resin composition which has significantly improved impact resistance while retaining intact transparency due to an impact modifier produced from easily available materials by an ordinary polymerization method. The composition contains as the impact modifier a coreshell elastomer obtained by graft-polymerizing in the presence of a conjugated diene copolymer rubber a monomer mixture comprising: an alkyl (meth)acrylate in which the alkyl has 3 to 8 carbon atoms an alkyl (meth)acrylate in which , the alkyl has up to 2 carbon atoms or a vinyl cyanide compound; and an , aromatic vinyl monomer in a specific proportion.
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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 April 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2023.
- 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.