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:
Mar. 07, 2006
Filed:
May. 19, 2004
Applicants:
Mahyar Vahabzadeh, Scottsdale, AZ (US);
Robert A. Kimball, Gilbert, AZ (US);
William A. Coghlan, Tempe, AZ (US);
Inventors:
Mahyar Vahabzadeh, Scottsdale, AZ (US);
Robert A. Kimball, Gilbert, AZ (US);
William A. Coghlan, Tempe, AZ (US);
Assignee:
World Properties, Inc., Lincolnwood, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An inverter is coupled to an EL lamp by a high pass filter including a series capacitor and a shunt resistor. The resistor is coupled in parallel with the EL lamp. The high pass filter has a time constant greater than 0.005 seconds and the capacitor has a capacitance at least ten times the capacitance of the EL lamp.