Modified olefin-based copolymer
CA 2456299 A1 · Owner: Mori, Toshiki · Inventors: Mori, Toshiki; Oi, Nobuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A modified olefin copolymer characterized by being obtained by graftpolymerizing an alkenylaromatic hydrocarbon and/or an unsaturated carboxylic acid with an olefin copolymer comprising repeating units derived from a linear .alpha.-olefin and/or ethylene and repeating units derived from the following vinyl compound (I) or (II); and an adhesive which contains the resin as an active ingredient. The adhesive has further improved adhesion to adherends such as olefin resins, e.g. polyethylene and polypropylene. Vinyl compound (I): a vinyl compound represented by CH2=CH-R wherein the substituent R has , steric parameters Es and B1 of -1.64 or smaller and 1.53 or larger respectively. Vinyl …
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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 August 6, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2024.
- 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.