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:
Jan. 29, 2013
Filed:
Aug. 27, 2009
Applicants:
Gang Yao, ShangHai, CN;
BO Zhang, ShangHai, CN;
Fanbin Fabio Wang, ShangHai, CN;
Xuefei Xie, ShangHai, CN;
Ting Zhang, ShangHai, CN;
Peng Sun, ShangHai, CN;
Inventors:
Gang Yao, ShangHai, CN;
Bo Zhang, ShangHai, CN;
Fanbin Fabio Wang, ShangHai, CN;
Xuefei Xie, ShangHai, CN;
Ting Zhang, ShangHai, CN;
Peng Sun, ShangHai, CN;
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 41/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
Ballasts are presented with improved end-of-life (EOL) detection of lamp DC voltage components and protection circuits to facilitate user maintenance and extend lamp life using selective dimming with preheating when EOL conditions are detected.