Injection stretch blow molding apparatus and method
CA 2172832 C · Owner: Sato, Koichi · Inventors: Ogihara, Shyuichi; Yokobayashi, Kazuyuki; Sato, Koichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An injection stretch blow molding apparatus and method wherein while the preforms (1) are amply cooled the injection molding cyle time is shortened and furthermore a small number of blow cavities are used and the operation rate of these blow cavities is increased. In an injection molding section (14), N (N 2) preforms (1) are injection molded and then released from the injection cavity mold (42) at a relatively high mold-release temperature. While the preforms (1) are cooled by the injection section core mold (50) they are carried to a, preform ejecting section (16). After the preforms cool to a temperature at which they can be ejected the preforms (1) are ejected from the, injection core …
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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 September 5, 1995 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 5, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2017.
- 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
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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.