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:
Dec. 01, 1981
Filed:
Aug. 29, 1979
Applicant:
Inventors:
Kenichi Shimizu, Fujisawa, JP;
Akihiro Kamiya, Yokosuka, JP;
Shu Yamazaki, Yokohama, JP;
Riozo Akiyama, Yojosuka, JP;
Teruji Makuuchi, Yokohama, JP;
Shiichiro Yoshizaki, Tokyo, JP;
Assignee:
Toshiba Corporation, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01K / ;
U.S. Cl.
CPC ...
3133 / ; 313218 ; 313311 ;
Abstract
In a discharge lamp comprising a sintered electrode comprising a high temperature melting metal such as tungsten, molybdenum, tantalum or mixtures thereof as a main ingredient of the sintered electrode and an electron emissive material of an alkaline earth metal or compound thereof, the sintered electrode further comprising at least one oxide of a metal selected from the group consisting of yttrium, zirconium and aluminum.