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Expired Canadian patentCanada

Led lamp with direct optical coupling in axial arrangement

CA 2553533 C · Owner: Coushaine, Charles M. · Inventors: Johnson, Ralph; Tessnow, Thomas; Coushaine, Charles M.

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

An LED light source comprises a heat sink having a body with a front surface and a rear , surface, the rear surface being provided with heat dissipaters. The front surface includes a , pocket for the receipt of components the components including at least one LEDs and , electrical circuitry therefor. A housing has a flange and a tubular projection fitted into the , pocket in a manner to fix the components in the heat sink; and an optical light guide , having at least one light pipes is positioned in the tubular projection each , of the at least , one light pipes having a light input end fixed in light gathering alignment with the at least , one LEDs in a one-to-one relationship.

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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 26, 2006 and granted November 4, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 26, 2006
GrantedNovember 4, 2014
Term endedJuly 26, 2026
Patent numberCA 2553533 C
Classification (IPC)G02B6/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJuly 26, 2006Patent grantedNov 4, 2014Term endedJuly 26, 2026

Sources & verification

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