Optical semiconductor device
CA 1311823 C · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Tada, Katsuhisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical semiconductor device comprises an optical semiconductor element which may be a light emitting element or a light receiving element, enclosed within a lensed-cap comprising a cap with a lens attached to it. A thread is formed in the outer side surface of the lensed-cap so that the lensed-cap can be screwfitted into a housing provided with a corresponding thread in its inner wall. The optical semiconductor device is screwed into the housing so as to form a module.
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 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 2009.
- 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.