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:
Dec. 02, 2003
Filed:
Jul. 19, 2002
Applicant:
Inventors:
John G. Konopka, Deer Park, IL (US);
Sameer Sodhi, Vernon Hills, IL (US);
Himamshu V. Prasad, Rolling Meadows, IL (US);
Assignee:
Osram Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/702 ;
U.S. Cl.
CPC ...
H05B 3/702 ;
Abstract
A ballast ( ) for powering a gas discharge lamp load includes an inverter ( ) and a protection circuit ( ) for preventing start up of the inverter ( ) in response to a ground fault condition wherein one or more of the ballast output connections ( ) is coupled to earth ground.