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:
Aug. 23, 1977
Filed:
Apr. 09, 1976
Applicant:
Inventors:
William M Keeffe, Rockport, MA (US);
Frederic Koury, Alexandria, NH (US);
Assignee:
GTE Sylvania Incorporated, Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313218 ; 313311 ; 3133 / ;
Abstract
The emitter material on the electrode of a high intensity discharge lamp comprises hafnium oxide, barium oxide and calcium oxide.
Keeffe, William. (1977). High pressure mercury vapor discharge lamp having improved electrodes (U.S. Patent No. 4044276). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4044276
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile