Laminate
CA 2000450 C · Owner: Mitsui Chemicals, Inc. · Inventors: Shigemoto, Hiromi
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 layer of a 4-methyl-1-pentene polymer. (B) a layer of a polymer composition comprising (a) 40 to 98 % by weight of an ethylene/ alpha-olefin random copolymer containing 30 to 95 mole % of ethylene units, (b) 0.1 to 20 % by weight of a polyolefin modified with an unsaturated carboxylic acid or its derivative. and, (c) 1 to 50 % by weight of a tackifier the proportions of components (a), (b) and (c) being based on the total weight of components (a) ,(b) and (c) , and, (C) a layer of a thermoplastic resin the layers (A), (B) and (C) being laminated in the sequence stated.
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 October 11, 1989 and granted January 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2011.
- 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.