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. 01, 1979
Filed:
Oct. 26, 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 / ; H01J / ;
U.S. Cl.
CPC ...
313218 ; 313227 ; 313229 ; 3133 / ; 313213 ;
Abstract
For HID lamps, and particularly high-pressure mercury or sodium-mercury HID lamps, the electron-emissive material portion of the lamp electrodes is M.sub.3 M'.sub.2 M'O.sub.9 wherein M is alkaline-earth metal and at least principally comprises barium; M' is yttrium, a lanthanoid series metal, or any mixtures thereof; and M' is tungsten, molybdenum, or mixtures thereof. The specified material is very stable and highly emissive.
Bhalla, Ranbir. (1979). Hid lamp electrode comprising barium (yttrium or rare earth metal) (U.S. Patent No. 4152619). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4152619
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile