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Expired Canadian patentCanada

Bromine anti-stokes raman laser

CA 1201519 A · Owner: American Telephone And Telegraph Company · Inventors: White, Jonathan C.

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

Abstract:, The invention provides an anti-Stokes Raman which uses a metastable level of bromine. A medium of molecules each of which contains at least one bromine atom is provided. Equipment is provided for dissociating the bromine atom from the molecules so that a majority of dissociated bromine atoms go into at least one excited metastable state. Equipment is provided for illuminating the bromine atoms in the metastable state with pump photons in order to provide anti-Stokes Raman output photons by transition from the metastable state to a final state. The output photons have energy equal to the pump photon energy plus an energy gain given by the energy difference between the metastable …

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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 March 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 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.
FiledApril 18, 1984
GrantedMarch 4, 1986
Term endedMarch 4, 2003
Patent numberCA 1201519 A
Classification (IPC)H01S3/14 +1 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedApril 18, 1984Patent grantedMarch 4, 1986Term endedMarch 4, 2003

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