Synthetic resin bottle having a gradation pattern, and process for injection molding the preform use in such a bottle
CA 2599558 C · Owner: Abe, Minoru · Inventors: Abe, Minoru; Chiba, Junichi; Shimura, Hiromi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The technical problem to be solved by the invention is to change the thickness of the colored resin layer of the preform gradually in the upward or downward direction, by utilizing a tendency of gradual decrease in the thickness of the colored resin layer caused by the flow of the main resin inside , the preform mold when the main resin and the colored resin are injected into the mold. The objects of this invention is to provide a biaxially drawn blow , molded bottle having new decorativeness created in which sophisticated color gradations associated with color density are created in the body of this bottle. , The means of accomplishing this object involves adjusting the injection …
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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 April 24, 2006 and granted June 16, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.