One-side-sealed high intensity discharge lamp with a specific sealed portion
CA 1303662 C · Owner: Inukai, Shinji · Inventors: Honda, Kazuo; Matsuura, Atsushi; Inukai, Shinji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high intensity discharge lamp includes a bulb a pair of electrodes for generating discharge therebetween, and a filling within the bulb. The bulb has a sealed portion at its one end for controlling radiation of the heat generated by the discharge so that the temperature of a least heated portion of the bulb can be maintained above a prescribed level.
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
- Granted June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
- 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.