Blends of elastomer block copolymer and aliphatic alpha-olefin/monovinylidene aromatic monomer and/or hindered aliphatic vinylidene monomer interpolymer
CA 2268079 A1 · Owner: Esneault, Calvin P. · Inventors: Ho, Thoi H.; Esneault, Calvin P.; Cheung, Yunwa W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic elastomeric blend composition comprising: (A) from 99 to 1 weight percent of a styrenic block copolymer; and (B) from 1 to 99 weight percent of an interpolymer of (1) at least one aliphatic .alpha.-olefin and (2) at least one vinylidene aromatic monomer or (3) a combination of at least one vinylidene aromatic monomer and at least one hindered aliphatic vinylidene monomer, wherein said vinylidene aromatic monomer is present in an amount of from 0.5 to 15 mole % or from 17 to 65 mole % in said interpolymer and , fabricated articles made from such composition.
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 October 15, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2019.
- 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.