Double-passage acousto-optical device and laser
CA 2282914 A1 · Owner: Pirelli Cavi E Sistemi S.P.A. · Inventors: Schmid, Steffen; Donati, Stefano; Morasca, Salvatore
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A double-passage acousto-optical device including an acousto-optical switch having a first polarization conversion region connected between first input and output, ports, and a second conversion region connected between second input and output, ports; and an optical combination connected between the first output port and the second, input port via optical fibers and including an optical isolating element. The double-passage acousto-optical device may alternately include an acoustooptical switch, including a single polarization conversion region connected between first input and, output ports and also connected between second input and output ports. A bandpass, filter, a notch filter, …
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
- Filed September 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 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.