Process and mold for producing a multilayer molded article
CA 2006675 C · Owner: Sumitomo Chemical Co. Ltd. · Inventors: Ishitsubo, Ryuichi; Hosokawa, Toshihiro; Matsumoto, Masahito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The multilayer molded article comprising a resin body and a skin material having substantially no wrinkles or breakage in the skin material is formed by molding a resin melt and the skin material in the mold while removing any air trapped between the skin material and the mold.
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 27, 1989 and granted April 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2011.
- 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.