Configurable optical circuit
CA 2298868 A1 · Owner: Keyworth, Barrie · Inventors: Keyworth, Barrie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A configurable add/drop optical system is disclosed for demulitplexing adding , and/or, dropping closely spaced channels carrying optically encoded data. A composite optical, signal having data channels corresponding to centre wavelengths .lambda.1 .lambda.2, .lambda.3, .lambda.4, ... .lambda.n are separated into two composite optical signals of first of which comprises data channels, corresponding to centre wavelengths .lambda.1 .lambda.3, ... .lambda.n and a , second which comprises data channels corresponding to centre wavelengths .lambda.2 .lambda.4, ... , .lambda.n-1, by passing the composite signal through an interleaver circuit in a demultiplexing mode of operation. Two such …
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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 February 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 2022.
- 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.