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Canadian application, no grantCanada

Luminaire having an optical conductor and a plurality of light sources

CA 2421996 A1 · Owner: Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh · Inventors: Reiners, Thomas; Fiegler, Matthias

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The luminaire according to the invention has a plurality of light sources with an. essentially punctiform light emission characteristic, operating means for the light sources and an optical conductor with a light exit surface designed to scatter light diffusely, and whose other outer surfaces, not serving for launching light are designed to, be totally reflecting or in a silvered fashion and which is, coupled optically to the light sources. These features or measures ensure that the luminaire emits light homogeneously. In particular, the light exit surface of the optical conductor appears to be illuminated with uniform brightness.

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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 March 12, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 12, 2003
GrantedNo grant recorded
Term endedMarch 12, 2023
Patent numberCA 2421996 A1
Classification (IPC)F21V5/00 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedMarch 12, 2003Term endedMarch 12, 2023

Sources & verification

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