Vacuum mold
CA 1262302 C · Owner: Honda Giken Kogyo Kabushiki Kaisha · Inventors: Kinugasa, Toshiyuki; Takahashi, Shoji; Furuya, Tamio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum mold for vacuum-forming a plastic sheet heated to a high temperature to transfer grain patterns onto the surface of the plastic sheet, the mold comprising an electrocast shell formed, by an electroforming step with a, casting surface having the grain patterns thereon and a multitude of fine vacuum holes uniformly distributed at the casting surface. A back-up body is mounted at the rear surface of the electrocast shell and is provided with vent holes communicating with the vacuum holes in the shell.
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 October 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 17, 2006.
- 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.