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Expired Canadian patentCanada

Cr-doped gadolinium gallium garnet laser

CA 1214251 A · Owner: Allied Corporation · Inventors: Digiuseppe, Michael A.; Goble, Theodore W.; Walling, John C.

CIPO record

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Abstract From the Canadian patent

Cr-DOPED GADOLINIUM GALLIUM GARNET LASER A broadly wavelength-tunable laser is provided which comprises as the laser medium a single crystal of GGG:Cr3+. The laser may be operated over a broad temperature range from cryogenic temperatures to elevated temperatures. Emission is in a spectral range from red to infrared, and the laser is useful in the fields of defense, communications, isotope separation photochemistry, etc.

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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 November 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 2003.
  • 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 10, 1984
GrantedNovember 18, 1986
Term endedNovember 18, 2003
Patent numberCA 1214251 A
Classification (IPC)H01S3/16 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedFeb 10, 1984Patent grantedNov 18, 1986Term endedNov 18, 2003

Sources & verification

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