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:
Mar. 13, 2001
Filed:
Dec. 15, 1998
Applicant:
Inventors:
Takagimi Yanagitani, Mitoyo-gun, JP;
Hideki Yagi, Mitoyo-gun, JP;
Seiki Imagawa, Marugame, JP;
Hitoshi Kubo, Mitoyo-gun, JP;
Assignee:
Konoshima Chemical Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C04B 3/550 ; H01J 1/716 ;
U.S. Cl.
CPC ...
C04B 3/550 ; H01J 1/716 ;
Abstract
A TAG, LAG or YbAG anti-corrosion layer of which Si content is 100 ppm or under and total content of Ca and Mg is 200 ppm or under is provided on the internal surface of a tubular YAG base of a discharge envelope. The mean particle size of the anti-corrosion layer is 20 &mgr;m or over, and the mean particle size of the base is 15 &mgr;m or under.