Discharge lamp with ignition aid
CA 2429546 A1 · Owner: Doll, Gerhard · Inventors: Doll, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a dielectric-barrier discharge lamp comprising , electrodes arranged on the wall of the discharge vessel. Said lamp has a VUV/VIS-reflection layer (6) made from a material with a high secondary electron emission coefficient on at least one section of the inner wall of the discharge vessel. A fluorescent material layer (7) is placed around the VUV/VIS-reflection layer (6). At least one section (8) in said fluorescent material layer (7) is devoid of fluorescent material partially revealing the underlying VUV/VIS-reflection layer (6) and being arranged at least in the immediate proximity of one or several electrodes (4) of the lamp. As a result the igniting …
Read the whole patent
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 4, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.