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, 2021
Filed:
Jun. 07, 2021
Applicant:
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Inventors:
Akihiro Kuno, Tokyo, JP;
Keiichi Maeda, Tokyo, JP;
Assignee:
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 61/073 (2006.01); H01J 61/82 (2006.01); H01J 61/52 (2006.01);
U.S. Cl.
CPC ...
H01J 61/0735 (2013.01); H01J 61/526 (2013.01); H01J 61/822 (2013.01);
Abstract
The short-arc discharge lamp includes a pair of electrodes arranged facing each other inside a light-emitting tube, the pair of electrodes made of a material containing tungsten; a coating formed on the first outer surface of at least one of the pair of electrodes, the coating made of a material containing ceramics; and tungsten particles adhered to a part of the second outer surface of the coating.