Polyolefin composition and use thereof
CA 2035570 A1 · Owner: Asano, Kuniyoshi · Inventors: Uemura, Tomoyoshi; Asano, Kuniyoshi; Takida, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Country : JAPON, No. : 23017 Filed on : 1st February 1990, File : AM 0471 A B S T R A C T, * * * * * * * *, A POLYOLEFIN COMPOSITION AND USE THEREOF * * * * * * * *, Company called : ATOCHEM 4 & 8 Cours Michelet, La Défense 10, 92800 PUTEAUX Authorized agent : Pierre POISSON, Inventors : Kuniyoshi ASANO Tomoyoshi UEMURA, Hiroshi TAKIDA, * * * * * * * * The present invention relates to a composition with barrier property comprising :, (A) 50 to 99.5 weight % of a polyolefin resin (B) 0.4 to 50 weight % of a saponified ethylene-vinyl acetate copolymer, and, (C) 0.1 to 15 weight % of a graft polymer obtainable by grafting an ethylenically unsaturated carboxylic acid or a derivative thereof to …
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 1, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2013.
- 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.