Hologram information reproducing device
CA 2610984 C · Owner: Mitsuya, Shinji · Inventors: Tokuchi, Naoyuki; Umeda, Yuichi; Someno, Yoshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Object To provide a hologram information reproducing device which can reproduce information from a recording medium on which hologram information is recorded and which , can be downsized. Solving Means When light from a light source 11 is emitted, the light is converted into reference light A which is parallel light, by a lens 121 of an optical system 12. A mirror 122 changes the orientation of the reference light A so that it is oriented obliquely downward towards a recording medium M. More specifically, as viewed from the top, the mirror 122 changes a path of the light from the light source unit 11 by approximately 90 degrees. In addition, as viewed from the side, the mirror 122 …
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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 June 2, 2006 and granted November 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 2, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.