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Canadian application, no grantCanada

Absorption resonant rare earth-doped micro-cavities

CA 2127614 A1 · Owner: Glass, Alastair Malcolm · Inventors: Glass, Alastair Malcolm; Zydzik, George John; Poate, John Milo

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, Absorption properties of an optically active medium can be changed drastically by a Fabry-Perot microcavity. Optically active medium of the cavity includes a host material which is not optically active and at least one rare earth ion which provides optical activity to the medium. The Fabry-Perot cavity is designed to be resonant with excitation wavelength of an absorption band of the host material. The excitation is provided by a source of radiation positioned such that the radiation impinges on the cavity at an angle within a range of from zero to less than 90 degrees from the normal to the top surface of the cavity. In one embodiment Erimplanted SiO2 is used as the optically …

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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 July 7, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 7, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 2016.
  • 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 7, 1994
GrantedNo grant recorded
Term endedJuly 7, 2014
Patent numberCA 2127614 A1
Classification (IPC)H01S3/06 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJuly 7, 1994Term endedJuly 7, 2014

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