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Expired Canadian patentCanada

Optical device for sustaining a radiant energy pulse device

CA 1185466 A · Owner: Thomson-Csf · Inventors: Huignard, Jean-Pierre

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, An interaction medium in which a photoinduced phase grating has been permanently recorded beforehand is coupled to the two ends of a monomode waveguide. A first wave which is a pulse travels through said waveguide and interferes with a second pumping wave in order to permit energy transfer from the second pumping wave to the first wave.

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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

  • Granted April 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2002.
  • 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 25, 1982
GrantedApril 16, 1985
Term endedApril 16, 2002
Patent numberCA 1185466 A
Classification (IPC)G02B1/00 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedFeb 25, 1982Patent grantedApril 16, 1985Term endedApril 16, 2002

Sources & verification

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