High pressure lamp bulb and method of induction sealing
CA 2372532 A1 · Owner: Zaslavsky, Gregory · Inventors: Caldwell, Dana L.; Zaslavsky, Gregory; Johnston, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high pressure, lamp may be made in a pressure vessel by using an induction coil, to melt an edge portion of a sealing wafer pressed against the circumference of an, opening in the body of the lamp envelope. The pressure vessel and the lamp envelope are, filled with desired fill materials. Induction heating is carried out by the induction coil, and induction receiver that presses against the wafer the lamp envelope or , both to hold, the melting piece or pieces in contact. The induction receiver may be fused to the lamp, body forming a functional part of the overall lamp structure. The preferred resulting, lamp includes a bonded metal piece that can be conveniently used for …
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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 February 18, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 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.