High-pressure discharge lamp
CA 2070845 A1 · Owner: Philips Electronics N.V. · Inventors: Coenen, Hubertus Arnoldus Martinus; 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 13.731 30.09.1991, ABSTRACT:, High-pressure discharge lamp. The invention relates to a high-pressure discharge lamp (2) provided with an outer bulb (30) which surrounds a discharge vessel (3) with intervening space. The lamp is provided with an ignition circuit (10) which comprises a SIDAC (6). According to the invention the SIDAC is mounted in a gas-filled, hermetically closed glass capsule (11) in the outer bulb. Figure 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 June 9, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 2014.
- 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.