Light-conductive circuit unit
CA 1270396 C · Owner: Kimura, Yoshihiko · Inventors: Tsubata, Hideo; Mohri, Minoru; Takahashi, Fumitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A light-conductive circuit unit comprises a substrate (1) made of an optical material, the substrate (1) having a light inlet surface (1a) for letting in a beam of light from a light source (2a to 2c), a light outlet surface (1b) for letting out a beam of light to a light-receiving element (3a to 39), and a light-conductive path (4a to 4h) constituted with a part of the substrate to conduct rays of light from the light inlet surface (1a) to the light outlet surface (lb), and a combination of light course turning parts (5a to 59) and optical switching mechanisms (6a to 6e) both substantially integrated with the substrate (1).
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 June 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2007.
- 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.