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:
Oct. 31, 1978
Filed:
Oct. 21, 1977
Applicant:
Inventor:
Ranbir S Bhalla, West Paterson, NJ (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313218 ; 313311 ; 3133 / ;
Abstract
For HID lamps, and particularly high-pressure sodium-mercury HID lamps, the electron-emissive material portion of the lamp electrodes is a solid solution of dibarium calcium tungstate and dibarium calcium molybdate wherein the molar ratio of tungstate to molybdate is from 9:1 to 1:9. Emissive properties of the electrode are good and vapor pressure of emissive material is low.