Fibrous casing material and a process of producing the same
CA 1065182 A · Owner: Kureha Kagaku Kogyo Kabushiki Kaisha · Inventors: Noda, Sakuo; Esaka, Akira; Noguchi, Tatsuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fibrous casing material comprising: 1) a composition comprising an ethylene-vinyl alcohol copolymer and a plasticizer; and 2) paper, and a process of producing the fibrous casing material by coating a paste prepared by dissolving composition 1) into an alcohol-water mixed solvent on one or both surfaces of the paper 2) or by impregnating an alcohol-water mixed solvent containing a plasticizer into paper 2) and laminating a film of the ethylene-vinyl alcohol copolymer on one or both surfaces of the paper, are disclosed.
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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
- Granted October 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 30, 1996.
- 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.