Acrylic film and moldings made using the same
CA 2246370 A1 · Owner: Sumitomo Chemical Co. Ltd. · Inventors: Tadokoro, Yoshio; Tsukuda, Yousuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An acrylic film or sheet made from a resin composition comprising 95 to 50 wt.% acrylic resin obtained mainly from methyl methacrylate and having a glass transition temperature of 40 to 105 ~C and dispersed therein, 5 to 50 wt.% , acrylic polymer having a multilayer structure containing an elastic rubbery layer; thermoplastic resin moldings having the film or sheet integrally bonded to the surface layer thereof; and a process for producing the moldings. This film or sheet is an excellent laminating material for use in laminating simultaneously with injection molding.
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 February 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2019.
- 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.