Semiconductor mesa structured optical processing devices, with added side- surface recombination centers to improve the speed of operation
CA 2017971 C · Owner: Mccall, Samuel Leverte Jr. · Inventors: Tai, Kuochou; Mccall, Samuel Leverte Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A semiconductor multiple quantum well mesa structure for use as the, optically active element in an optical logic or an optically controlled optical switching device, has its side surfaces implanted with surface recombination centers whereby the optical switching speed is increased.
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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 May 31, 1990 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2012.
- 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.