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. 08, 2000
Filed:
Mar. 30, 1999
Applicant:
Inventors:
Ichiro Yokozeki, Kanagawa-ken, JP;
Kozo Uemura, Kanagawa-ken, JP;
Assignee:
Toshiba Lighting & Technology Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
315248 ; 315344 ; 315 39 ;
Abstract
An electrodeless discharge lamp unit includes an electrodeless discharge lamp that has a luminescent tube with an excitation coil wound round and an auxiliary tube, a high-tension applying circuit to apply pulse voltage of a peak value that is able to dielectric break the discharge space in the luminescent tube and a current injection circuit to apply voltage, that is able to maintain non-ring shaped discharge formed in the luminescent tube by applying pulse voltage by a high-tension applying circuit even when the application of pulse voltage is suspended, to the end of the auxiliary tube.