Process for gas assisted and water assisted injection molding
CA 2348128 A1 · Owner: Thomas, Ronald · Inventors: Thomas, Ronald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid and gas assisted injection molding apparatus comprising a source of liquid coolant, a source of compressed gas a source of heated viscous plastic, a mold cavity means for controllably, injecting said plastic into said cavity means for controllably injecting said compressed gas into said, cavity, means for controllably injecting said liquid coolant into said cavity and means for selectively, controlling the injection of said plastic gas and liquid coolant.
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
- Filed May 16, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2023.
- 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.