Foamable polyester resin composition
CA 2422117 A1 · Owner: Kadokura, Mamoru · Inventors: Kadokura, Mamoru; Sunagawa, Takenobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An expandable polyester resin composition which comprises (A) 100 parts by weight of a polyester resin, (B) 0.5 to 30 parts by weight of a (meth)acrylic ester polymer or polymer mixture obtained by polymerizing 0 to 50 parts by weight of an acrylic ester monomer in the presence of a latex of a polymer having a specific viscosity of 0.7 to 1.9 obtained by polymerizing 50 to 100 parts by weight of a methyl methacrylate monomer (C) 0.1 to 30 parts by , weight of a filler and (D) a blowing agent.
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 July 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2024.
- 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.