Method of and device for measuring return losses in optical fibre components
CA 2229423 C · Owner: Bottazzi, Lorenzo · Inventors: Bottazzi, Lorenzo; Sorel, Marc; Tambosso, Tiziana
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and device are provided for measuring return losses in optical fibre components wherein the, radiation reflected by the optical fibre component is reintroduced into the cavity of the source and the value of such losses is obtained by measuring the amplitude of the radiation resulting from the combination between such reflected radiation and the radiation generated by the source.
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 February 13, 1998 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2020.
- 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.