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:
May. 18, 1999
Filed:
Jul. 23, 1996
Applicant:
Inventors:
Osamu Nakamura, Tachikawa, JP;
Shigemi Suzuki, Yokohama, JP;
Assignees:
Casio Computer Co., Ltd., Tokyo, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313491 ; 313345 ; 3133 / ; 313355 ;
Abstract
A cold-cathode discharge device for emitting light. The device has a fluorescent tube and electrodes containing R.sub.2 O.sub.3-z (where R is an atom or an atom group of rare earth elements, O is oxygen, and z is 0.0 to 1.0). The electrodes are made by oxidation of the rare earth elements under an atmosphere in which oxygen and/or oxygen-containing substance is 1% or less by volume, in order to control the stoichiometry of the oxide.