Method of manufacturing a semiconductor laser
CA 1081351 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Van Dongen, Teunis; Tijburg, Rudolf P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of manufacturing a semiconductor device for generating laser beams comprising a semiconductor body having mirror faces transverse to the direction of the beams which reflect the said beams, said mirror faces being subjected to an oxidation treatment. According to the invention, the oxidation treatment includes an electrolytic oxidation step. -8-
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 July 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 1997.
- 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.