High-pressure discharge lamp
CA 2092384 A1 · Owner: N.V. Philips' Gloeilampenfabrieken · Inventors: Schellen, Johannes Antinus Theresia; Luijks, Gerardus Marinus Josephus Franciscus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHN 14.028 4.6.1992, ABSTRACT:, High-pressure discharge lamp. The invention relates to a high-pressure discharge lamp (2) provided with a discharge vessel (3) with a ceramic wall (3a) and provided with a bimetal element (11) which rests against the discharge vessel wall in the cold state of the lamp and, which is removed from the discharge vessel wall during lamp operation. The discharge vessel is surrounded by an outer bulb (30) with intervening space (6) in which space a, solid-state getter (15) is provided. According to the invention the solid-state getter is provided on the bimetal element. Fig. 1.
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 March 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2015.
- 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.