Method of removing molded natural resins from molds utilizing lifter bars
CA 2517366 C · Owner: T.F.H. Publications, Inc. · Inventors: Axelrod, Glen S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process of injection molding a natural resin into a mold cavity (12) including lifter bar (22) as part of the ejection system for removing the molded natural resin from the mold cavity. The lifter bar is provided with a contacting area having a relatively high surface area ratio relative to surface area of the molded natural resin that remains in contact with the mold (10) after injection and mold opening.
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 February 27, 2004 and granted January 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 27, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2026.
- 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.