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. 09, 2004
Filed:
Dec. 04, 2002
Tetsuji Hirao, Takasago, JP;
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Abstract
To devise an ultra-high pressure mercury lamp in which even in the case of lamp operation over a long time devitrification of the light emitting part is suppressed, an ultra-high pressure mercury lamp with a silica glass light emitting part in there is a pair of opposed electrodes, a rare gas, a halogen and at least 0.15 mg/mm of mercury, by the amount of halogen in the light emitting part being at least 1.0×10 &mgr;mol/mm and the amount of Mo in the light emitting part being at most 0.5×10 &mgr;mol/mm . Also, such a lamp can have an amount of halogen in the light emitting part of at least 2.0×10 &mgr;mol/mm with an amount of Mo of at most 1.0×10 &mgr;mol/mm .
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile