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. 05, 1992
Filed:
Dec. 14, 1990
Applicant:
Inventors:
David A Goodman, Amesbury, MA (US);
John L Plumb, Danvers, MA (US);
Rudy E Geens, Leuven, BE;
Richard A Snellgrove, Danvers, MA (US);
Elliot Wyner, Peabody, MA (US);
Assignees:
GTE Products Corporation, Danvers, MA (US);
GTE Sylvania N.V., , BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313630 ; 313628 ; 252521 ;
Abstract
An emissive material for use in a vapor discharge device including reacted Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4 wherein X satisfies the following: 1>X.gtoreq.0. A vapor discharge device is provided having an arc tube which includes electrodes therein coated with such emissive material.