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Expired Canadian patentCanada

Continuous wave raman oscillator

CA 1115395 A · Owner: Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty'S Canadian Government · Inventors: Johnson, Derwyn C.; Kawasaki, Brian S.; Hill, Kenneth O.

CIPO record

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

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Abstract From the Canadian patent

A continuous wave RAMAN oscillator utilizing an optical laser pump of low power including an output mirror a solid core optical glass fiber waveguide and a, Fabry-Perot resonator including the waveguide having a, virtually totally reflective mirror coupled to one end of the waveguide. The output mirror of the pump is coupled to the other end of the waveguide as the input mirror thereof. wavelength selective means comprising an output reflector is coupled to the resonator for passing at least RAMAN oscillation frequency signals out of the resonator.

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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 December 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 25, 1978
GrantedDecember 29, 1981
Term endedDecember 29, 1998
Patent numberCA 1115395 A
Classification (IPC)H01S3/07 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJuly 25, 1978Patent grantedDec 29, 1981Term endedDec 29, 1998

Sources & verification

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