Optical computing method using interference-fringe component regions
CA 2060302 A1 · Owner: Hait, John N. · Inventors: Hait, John N.; Hait, John N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fundamental method and apparatus for using wave-type energy such as light, toprovide: amplification energy control, and logic functions including OR EXCLUSIVE OR, and INVERTER; as well as: bistable information storage; computing; visual display; and dynamic imaging (where images are modified continually as computation proceeds) is disclosed. The method uses modulated input beams that are able to produce interference fringes, that are separated into constructive interference component regions and destructive interference component regions, to provide outputs from individual functions that result, from the interference which occurs in the separated interference-fringe component regions. …
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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 October 17, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2013.
- 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.