Amorphous polyester resin composition
CA 2503295 A1 · Owner: Shimizu, Michio · Inventors: Onuma, Hisashi; Shimizu, Michio; Kadokura, Mamoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A substantially amorphous polyester resin composition which comprises 1 to 40 parts by weight of a core-shell impact resistance improving agent having as a , core, a bilayer aromatic vinyl-butadiene based copolymer having a refractive index of 1.55 to 1.60 and containing an innermost layer having a high content in weight of a monomer of cross-linking property and 60 to 99 parts by weight , of at least one aromatic polyester or co-polyester. The polyester resin composition exhibits high transparency and high impact resistance and is improved in the whitening at a low stress.
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 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2025.
- 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.