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. 28, 1979
Filed:
Feb. 28, 1978
Applicant:
Inventors:
Marinus G Tak, Eindhoven, NL;
Robert C Peters, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313486 ;
Abstract
A low-pressure mercury vapor discharge lamp provided with a luminescent Eu-activated rare earth oxide, a luminescent aluminate with hexagonal crystal structure activated by Ce or by Ce and Tb, or a luminescent aluminate with hexagonal crystal structure activated by Eu or by Eu and Mn. Not more than 5% by weight of the luminescent material has a grain size smaller than 1 .mu.m and the maximum of the grain size distribution curve is located in the range from 2 to 8 .mu.m.
Tak, Marinus. (1979). Fluorescent discharge lamp having luminescent material of a specified (U.S. Patent No. 4166234). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4166234
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile