Method for manufacturing biaxially oriented blow containers and apparatus for manufacturing the same
CA 2028186 C · Owner: Orimoto, Hiroyuki · Inventors: Suzuki, Saburo; Amari, Fumiya; Orimoto, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method and apparatus for manufacturing a biaxially oriented blow container characterized in that in forming a preform into a primary molded article having a configuration of a container by orientation blow molding and contracting the primary molded article by heat treatment to blow mold it into a container a predetermined internal pressure is maintained in the primary molded article during said heat treatment and the contraction is controlled by said internal pressure.
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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
- Filed October 22, 1990 and granted November 8, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2012.
- 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.