Polyester resin compositions
CA 2334665 A1 · Owner: Kuraray Co. Ltd. · Inventors: Okamoto, Chihiro; Taniguchi, Shunro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyester resin composition (A) comprising a polyethylene terephthalate copolymer comprising 5 to 40 % by mole of naphthalenedicarboxylic acid units (copolymer PET), a cobalt compound and/or a manganese compound an olefin , polymer, and a predetermined amount of a compatibilizing agent; and another polyester resin composition (B) containing predetermined amounts of a cobalt compound and a manganese compound in the copolymer PET. The compositions are excellent in resistance to hydrogen peroxide flavor barrier properties, gas , barrier properties heat sealability, and mechanical properties such as elongation and strength, so that they can be utilized in various applications including …
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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 June 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2020.
- 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.