Easily delaminatable laminate and resin composition for use therein
CA 2359025 A1 · Owner: Sumitomo Chemical Co. Ltd. · Inventors: Naitoh, Shigeki; Fujita, Mahito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laminate comprising (A) a substrate, (B) an adhesive which is reduced in adhesiveness upon exposure to a type of energy to render the laminate to be , delaminated with ease and (C) an adhesive which is not reduced in adhesiveness upon exposure to the type of energy the three types of materials , being laminated in the above order; and a resin composition for use in the laminate comprising an epoxy resin and/or a modified silicone resin and a blowing agent. The laminate exhibits high adhesiveness during use and after , use the substrate can be separated from the laminate with ease through irradiating the laminate with the above type of energy.
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 November 21, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2022.
- 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.