Polyester-based resin composition
CA 2440909 C · Owner: Mitsubishi Gas Chemical Company, Inc. · Inventors: Yamamoto, Koji; Mori, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The polyester-based resin composition of the present invention comprises a polyamide resin a polyester resin containing an antimony compound and a compound selected from the group consisting of inorganic acid salts and hydroxides of group-1 or -2 metals of the periodic table and transition metals. In the polyester-based resin composition the phosphorus atom concentration, the antimony atom concentration and the blending ratio of the inorganic acid salt or hydroxide to the phosphorus compound are regulated so as to satisfy the specific relationships to effectively prevent the darkening due to the deposition of antimony metal thereby providing the polyester-based resin composition having …
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 September 16, 2003 and granted August 23, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.