Process for preparing blazed holograms
CA 1325502 C · Owner: Kurata, Yukio · Inventors: Kurata, Yukio; Yamaoka, Hideyoshi; Kubo, Katsuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing blazed hologram suitable for mass-production which comprises fabricating a glass or metal plate having a surface of serrated cross section disposing, the glass or metal plate in an injection mold to allow the surface of serrated cross section to constitute an inner surface of the mold, injecting an acrylic resin in molten form into the mold under a specific molding pressure and, removing a molded acrylic resin from the glass plate or metal plate to obtain an acrylic blazed hologram.
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 December 28, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 2010.
- 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.