Expired Canadian patentCanada
A process for the optical transmission of numeric data
CA 2198270 C · Owner: Penninckx, Denis · Inventors: Penninckx, Denis; Beylat, Jean-Luc; Chesnoy, Jose
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to increase the length of transmission in an optical fibre the process uses a concurrent modulation of power (A
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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 February 21, 1997 and granted July 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 21, 1997
GrantedJuly 23, 2002
Term endedFebruary 21, 2017
Patent numberCA 2198270 C
Classification (IPC)H04L27/36
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.