Polyester compositions
CA 2324008 A1 · Owner: Kabushiki Kaisha Kobe Seiko Sho Also Known As Kobe Steel, Ltd. · Inventors: Thomson, Michael David; Woodfine, Barry; Bassam, Farideh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a composition comprising from 20 to 70 parts by weight of polyethylene terephthalate (PET) from 20 to 70 parts by weight of , polyethylene naphthalate (PEN) and from 10 to 33 parts by weight of polybutylene terephthalate (PBT), the total being 100 parts by weight in , the form of a polymer blend and/or copolymer.
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 March 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2021.
- 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.