Device able to process an optical signal
CA 2292356 A1 · Owner: Tonini, Andrea · Inventors: Piccinin, Davide; Tonini, Andrea; Boffi, Pierpaolo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical device comprising:, a) a first input for at least one input optical signal having a random state of polarization; b) a first optical element capable of dividing in, space, said at least one input optical signal into a pair of optical signals which are substantially parallel and have a predetermined state of polarization perpendicular to one another; c) a first crystal element for propagation in free, space, of at least said pair of optical signals coming from said first optical element said first, crystal element being devoid of internal separation planes, having electro-optical properties and being associated with electrodes so as to apply a voltage in a direction substantially …
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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 December 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2021.
- 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.