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Expired Canadian patentCanada

High-power radiation source

CA 1310686 C · Owner: Eliasson, Baldur · Inventors: Eliasson, Baldur; Kogelschatz, Ulrich

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

The high-power radiation source for visible light comprises a discharge space (4) bounded by dielectrics (1 10) and filled with a noble gas or gas mixture. Adjacent to the dielectrics (1,10) are luminescent coatings (5,11). Both the dielectric (1,10) and the electrode (6,12) situated on the surfaces of the dielectrics facing away from the discharge space (4) are transparent to the radiation generated by the dark electrical discharges. In this way, a large-area radiation source with high efficiency is provided which can be operated with high electrical power densities of up to 50 kW/m2 of active electrode surface.

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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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 10, 1989
GrantedNovember 24, 1992
Term endedNovember 24, 2009
Patent numberCA 1310686 C
Classification (IPC)H01J65/04

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJan 10, 1989Patent grantedNov 24, 1992Term endedNov 24, 2009

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