Multilayered tube for draw molding and multilayered container utilizingthe tube
CA 1301087 C · Owner: Kuraray Co. Ltd. · Inventors: Shimamura, Kunihiko; Shirano, Kenji; Ishii, Toshinori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The present invention is directed to a tube having very little or no local minute nonuniformity in the thickness of the EVOH layer. Drawn-formed articles, e.g. blow bottles obtained by draw molding the tube have no streaks and are superior in appearance.
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
- Granted May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.