Injection-molding dimension-control and clamp-reduction
CA 2033338 C · Owner: Regatta Limited · Inventors: Sorensen, Jens Ole
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The dimensions of an injected molded hollow plastic product are controlled and the separative force exerted against mold sections (10, 12) during molding of the product are reduced by injecting plastic material continuously from a gate (30) into a mold cavity (16) having flow channels (19), extending through the cavity region until the mold cavity is filled with said injected plastic material, with said injection being under such conditions of injection pressure, injected plastic material temperature, mold cavity temperature flow, channel length, distance between flow channels flow, channel thickness and wall thickness in a thin-cavity region between flow channels that initially injected …
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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 May 30, 1990 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 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.