Method and device for injection molding
CA 2737425 C · Owner: Honda Motor Co. Ltd. · Inventors: Kawachi, Shinya; Kimura, Mikihiko; Enjoji, Naoyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for injection molding comprises the following steps: a step of preparing a first mold a second mold, and a third mold, a step of sandwiching a separator single body by the first mold and the second mold a step of injecting silicone rubber into a front-side cavity through a gate to form a front-side formed layer a step of replacing the second mold with the third mold while the front-side formed layer is soft and a step of penetrating the front-side formed layer by injection pressure of the silicone rubber injected through the gate filling the silicone rubber into a back-side cavity through a penetration hole and forming a back-side formed layer.
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 December 10, 2003 and granted January 21, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2025.
- 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.