The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2007
Filed:
May. 07, 2004
Applicant:
Kazuhisa Nishida, Tokyo, JP;
Inventor:
Kazuhisa Nishida, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H00J 61/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A high-pressure discharge lamp has a lamp bulb of silica glass encapsulating mercury, an inactive gas, and a mixed halogen gas containing at least two halogen gases, and at least a pair of electrodes disposed in the lamp bulb in confronting relation to each other. The type and content of a primary halogen gas whose content is the greatest in the mixed halogen gas are determined based on a bulb wall load.