Formation of foamed resin article
CA 2508448 A1 · Owner: Hiramatsu, Masaya · Inventors: Iwai, Teruo; Hiramatsu, Masaya; Ohta, Masato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of molding a resin foamed item capable of remarkably increasing workability for mold release since the resin foamed item such as a seat pad can be released from a molding die by sliding along the internal surface of the molding die and the molding die for the method. In the molding die locking projections (20) and (30) and a pocket part (40) are installed on the internal surface of the core (3) of the molding die the face (10a) of an , integral molding member (10) is opposed to the core (3) overlapped with the , surface of the core (3) so that the projections (20) and (30) come into large hole parts (12) and (12), and slid to lead the projections (20) and (30) into narrow …
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 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 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.