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:
Jul. 09, 2002
Filed:
Apr. 07, 2000
Applicant:
Inventors:
Detlev Hennings, Aachen, DE;
Oliver Steigelmann, Aachen, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 6/104 ;
U.S. Cl.
CPC ...
H01J 6/104 ;
Abstract
A gas discharge lamp has electrodes of Ba(Ti Zr )O with donor/acceptor dopants. Specific donor/acceptor combinations, an optimized content of zirconium and an optimized atomic ratio between the cations leads to ferroelectric ceramic exhibiting high values of the remnant polarization P and the dielectric constant &ggr; , as well as rectangular hysteresis loop and low coercive field strengths E . When an alternating voltage is applied to the ferroelectric electrodes, the non-linear properties of the electrodes bring about the ignition of the lamp as well as the continuous operation thereof.