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. 21, 1980
Filed:
Jan. 18, 1979
Applicant:
Inventor:
William A McAllister, Morris Township, Morris County, NJ (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313225 ; 313229 ; 313486 ;
Abstract
Mercury metal-halide HID lamp has as a discharge-sustaining filling mercury, neodymium iodide and cesium iodide, with the gram mol ratio of neodymium iodide to cesium iodide being about 1:1. Sodium iodide may also be included as a discharge-sustaining material to supplement the foregoing materials. The lamp has a protective outer envelope which carries on the inner surface thereof finely divided phosphor which specifically is calcium sulfide activated by europium and sensitized by one of lead or tin, in order to lower the color temperature of the lamp and improve the color rendering properties thereof.