Injection molding techniques utilizing fluid channels
CA 2397751 A1 · Owner: Conix Corporation · Inventors: Porter, Marshall Ray
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides processes and an apparatus for injectionmolding an article with a fluid channel formed therein. The process includes providing at least first and second resin streams within a mold cavity causing the flow fronts (16) of the resin streams to meet at a longitudinal point in the mold cavity to form a first layer of solidified resin on a peripheral surface of the mold, the first layer having a knit line (20) at the longitudinal point where the resin streams meet; and introducing a fluid into the molten resin in the mold to form a fluid channel (50) and a second layer (32) of solidified resin, the second layer between the fluid channel and the first layer of …
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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 February 23, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 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.