Plasticizer resistant pressure sensitive adhesive for vinyl marking film
CA 2133570 A1 · Owner: Matsuda, Hiroshi · Inventors: Matsuda, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2133570 9322391 PCTABScor01, A decorative film that is free of deterioration of the surface film due to the generation of wrinkles even when being applied to an adherent having plasticizer migration ability such as, polyvinyl chloride, and an adhesive thereof comprising: 100 parts by weight of a copolymer having a weight average molecular weight of 700,000-1,200,000 obtained by copolymerization of 64-75 % by weight of a (meth)acrylate having a C4-C8-alkyl group 20-26 % by, weight of methyl methacrylate and 5-10 % by weight of acrylic acid and 0.005 to 0.1 parts by weight of a crosslinker.
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 April 27, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2015.
- 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.