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:
Sep. 11, 2001
Filed:
Feb. 24, 1999
Applicant:
Inventor:
Oleg Popov, Needham, MA (US);
Assignee:
Matsoshita Electric Works Research and Development Laboratory Inc, Woburn, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/100 ;
U.S. Cl.
CPC ...
H01J 1/100 ;
Abstract
An electrodeless fluorescent lamp comprises a glass closed-loop envelope filled with inert gas and mercury vapor at pressure of 0.1-5 torr. An induction coil of few turns and made from Litz wire is disposed on the outer surface of the lamp inside of the closed-loop envelope. A phosphor coating is disposed on the inner surface of the envelope surface and a reflective coating is disposed on the inner surface of the area adjacent to the induction coil.