Protection arrangement for an optical transmitter/receiver device
CA 2064648 C · Owner: Mestdagh, Denis Julien Gilles · Inventors: Mestdagh, Denis Julien Gilles; Van De Voorde, Ingrid Zulma Benoit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This protection arrangement protects an optical transmitter device (TX) with n optical transmit circuits (LCl/LCn) or an optical receiver device (RX) with n optical receive circuits (RXl/RXn). It includes fault evaluating means (FE) to detect a defective transmit/receiver circuit a spare transmit (STC)/receive (SRC) circuit and switching means (S, Sl) upon detection of a defective transmitter/receiver circuit by the fault evaluating means the latter controls the spare circuit and the switching means which then bypass the defective circuit by the spare circuit.
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 April 1, 1992 and granted April 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2014.
- 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.