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:
May. 27, 2014
Filed:
Nov. 13, 2009
Applicants:
Juergen Klier, Traunreut, DE;
Richard Pfaller, Traunwalchen, DE;
Inventors:
Juergen Klier, Traunreut, DE;
Richard Pfaller, Traunwalchen, DE;
Assignee:
OSRAM Gesellschaft mit beschraenkter Haftung, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 41/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A detector circuit for controlling at least one fluorescent lamp is provided, wherein the detector circuit is configured such that an inactive fluorescent lamp can be detected if a first signal is present at least one of a first input and a second signal is present at a second input in a detection interval after a start-up phase.