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Canadian application, no grantCanada

Multichannel optical spectrum slicer

CA 2350188 A1 · Owner: Moritex Corporation · Inventors: Ohtsuka, Yoshihiro; Tokuyama, Syumei; Horio, Koji

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

An optical spectrum slicer capable of converting and outputting discontinuous spectrum lights having spectral components at a desired wavelength spacing from a broad band continuous spectrum light, with a simple constitution and at a reduced cost, the slider comprising a birefringent device having two polarization axes each orthogonal to an optical axis (z) and linear polarizers disposed at the light incident end and the light emission end thereof with the direction of, polarization being inclined by about 45° relative to each of polarization axes, and a heat generator for controlling the temperature of the birefringent device thereby variably controlling each of wavelengths while …

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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 June 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 12, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 12, 2001
GrantedNo grant recorded
Term endedJune 12, 2021
Patent numberCA 2350188 A1
Classification (IPC)H04J14/02 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedJune 12, 2001Term endedJune 12, 2021

Sources & verification

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