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:
Oct. 16, 1979
Filed:
Jan. 16, 1978
Applicant:
Inventor:
Young D Kwon, Cupertino, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
315248 ; 315344 ; 336229 ;
Abstract
An electrodeless fluorescent light source that includes a non-conducting light transmissive hermetically sealed envelope containing an ionizable gas which is electromagnetically coupled to an ionizing radio frequency (r.f.) energy source is described. The r.f. energy source is an induction coil wound in the form of a toroidal helix to minimize microwave radiation leakage, and is placed within the envelope and in direct contact with the gas in order to maximize energy coupling to the gas.