Starting aid for high intensity discharge lamp
CA 2429787 A1 · Owner: Osram Sylvania Inc. · Inventors: Scholz, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lamp assembly that comprises a hollow arc discharge light source having a center arc, chamber containing an arc generating and sustaining medium and first and second ends with, an electrode receiving capillary extending from each end and arrayed along a longitudinal, axis. The ends are cylindrical in cross-section. An electrode structure is positioned in each of, the capillaries and each of these electrode structures comprises a proximal electrode end, projecting into the interior of the center arc chamber a distal end , projecting exteriorly of said capillary and an intermediate section therebetween. A first area of the intermediate section is, sealed to the capillary in an …
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 May 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 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
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.