Optical fiber telecommunication system
CA 2239756 A1 · Owner: Sniadower, Lucjan · Inventors: Sniadower, Lucjan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an optical fiber telecommunication system and more in particular to an optical telecommunication system having a high loss transmission line. It relates also to an optical fiber amplifier doped with a rare earth such as, erbium, for use in said system. The optical fiber telecommunication system comprising: - a transmission station producing at least one transmission optical signal in a predetermined wavelength band carrying the information; - a receiving station for receiving said transmission optical signal; - an optical fiber line connecting said transmission station and said receiving station, and, - at least one optical fiber amplifier connected along …
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 June 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 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.