Discharge lamp having overlaid fluorescent coatings and methods of making the same
CA 2489445 A1 · Owner: Voltarc Technologies, Inc. · Inventors: Laudano, Joseph D.; Sastry, Prasad S.; Kansal, Kamlesh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a new and useful discharge lamp for use in applications such as , tanning and technical lighting and a method of making the same. The discharge lamp includes, inter alia, a vitreous tube (52) having an axial length a base , phosphor coating (56) applied on the interior of the tube along the entire axial length, and at least one phosphor over-coat (59) applied over the base phosphor coating (56) in one or more axial regions of the vitreous tube. The phosphor over-coat is applied to less than the total length of the vitreous tube. In a representative embodiment, the vitreous tube has an outer periphery which is smooth, but in alternate embodiments a helical groove path is …
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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 16, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 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.
Timeline
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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.