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Canadian application, no grantCanada

Wavelength dispersion compensation module and optical transmission system including the same

CA 2398716 A1 · Owner: Sasaoka, Eisuke · Inventors: Sasaoka, Eisuke; Tsukitani, Masao; Tanaka, Shigeru

CIPO record

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Abstract From the Canadian patent

A wavelength dispersion compensation module for realizing high bit-rate signal transmission through simple arrangement and an optical transmission system including it. The wavelength dispersion compensation module comprises a wavelength dispersion compensator for compensating the wavelength dispersion of an optical fiber transmission line at a predetermined wavelength and a , temperature regulator for setting a desired wavelength dispersion value of the wavelength dispersion compensator by regulating the temperature thereof. With this arrangement, dispersion compensation control depending on variation in the wavelength dispersion of the optical fiber transmission line with …

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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 October 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 6, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 6, 2000
GrantedNo grant recorded
Term endedOctober 6, 2020
Patent numberCA 2398716 A1
Classification (IPC)H04J14/02

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedOct 6, 2000Term endedOct 6, 2020

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.