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:
Aug. 13, 2002
Filed:
Apr. 19, 2000
Youichirou Higashimoto, Himeji, JP;
Takumi Yamane, Himeji, JP;
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Abstract
To reliably prevent the appearance of cracks in the sealing tube, a short-arc discharge lamp having a bulb with a light-emitting tube and sealing tubes connected to both sides of the light-emitting tube, with an anode and a cathode positioned facing each other within the light-emitting tube on the ends of electrode rods that pass through sleeve material that is supported by the sealing tubes, in which short-arc discharge lamp molybdenum foil is located between the sleeve material and the sealing tube, the outer surface of the molybdenum foil which faces the sealing tube has a surface treatment with a high-melting-point, oxidation resistant metal. The high-melting-point metal is preferably chosen from among tungsten, rhenium, tantalum, rhodium and platinum.