Method of injection-molding foamed products
CA 1298047 C · Owner: Kabushiki Kaisha Kobayashi · Inventors: Shimada, Makoto; Endo, Osamu; Wada, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of injection-molding foamed products. Raw material consisting of a foaming type plastisol is heated within a cylinder of an injection molding machine so that the raw material is gelatinized. The gelatinized raw material is injected into a cavity of a mold through a nozzle of the injection molding machine. During the injection the raw material is foamed at the, nozzle. The raw material in the foamed state is filled in the cavity of the mold and is cooled and solidified therewithin.
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
- Granted March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- 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.