Method of analyzing guided optics components, optical fibres or optical guide networks by time reflectometry and reflectometer in the time sphere
CA 2005607 C · Owner: Pagnoux, Dominique · Inventors: Faugeras, Pierre; Facq, Paul; Froehly, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method of analyzing guided optics components, optical fibres or optical guide networks by time reflectometry and a reflectometer in the time sphere. It comprises a source for transmitting a probe light signal formed of short periodic pulses a, light flow separator device for injecting the probe signal into a guide connected to the system to be analyzed and extracting a backscattered response signal and a series of components for analyzing the backscattered response signal.
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 December 14, 1989 and granted December 6, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 14, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2011.
- 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.