US Patent No: 4,228,482

Number of patents in Portfolio can not be more than 2000

Multilayer ceramic capacitors

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Abstract

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Multilayer capacitors of good electrical properties can be made by firing, in air at low temperatures, certain modified lead titanate dielectric compositions. The dielectric compositions have the formula (Sr.sub.x Pb.sub.1-x TiO.sub.3).sub.a (PbMg.sub.0.5 W.sub.0.5 O.sub.3).sub.b wherein x is 0-0.10, a is 0.35-0.5, b is 0.5-0.65, and a plus b equals one.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
E. I. DU PONT DE NEMOURS AND COMPANYWILMINGTON, DE12104

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bouchard, Robert J Wilmington, DE 1 14
Brixner, Lothar H West Chester, PA 9 143
Popowich, Michael J Lewistown, NY 1 14

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Patent Info (Count) # Cites Year
 
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5,191,687 Process for making piezoelectric stacks 4 1990
5,271,133 Method for making a piezoelectric stack 13 1992
 
Apricot Materials Technologies, LLC (1)
8,561,271 Methods for manufacture a capacitor with three-dimensional high surface area electrodes 0 2010
 
AVX CORPORATION (1)
4,347,650 Method of making marginless multi-layer ceramic capacitors 19 1980
 
CERAMIC DIELECTRICS, INC., A CORP. OF DE (1)
4,582,814 Dielectric compositions 19 1985
 
Enercap Corporation (1)
4,870,538 High energy density capacitor and method of fabrication 9 1988
 
GKN LOBRO GMBH (1)
6,350,202 Constant velocity fixed joint with control element 2 2000
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
5,561,828 Method of manufacturing a ceramic electronic part 2 1994
 
Mitsubishi Mining & Cement Co., Ltd. (1)
4,843,046 Ceramic composition of high dielectric constant comprising PbO.sub.3, La.sub.2 O.sub.3, MO, ZrO.sub.2 and TiO.sub.2 4 1987
 
MURATA MANUFACTURING CO., LTD. (1)
5,561,587 Conductive paste and multilayer ceramic capacitor 25 1994
 
NEC CORPORATION (1)
4,567,542 Multilayer ceramic substrate with interlayered capacitor 47 1984
 
TAM CERAMICS, INC. (1)
4,640,905 Dielectric compositions 22 1986
 
The United States of America as represented by the Secretary of the Army (1)
5,079,200 Detector material for uncooled thermal imaging devices 25 1990
 
Tokyo Shibaura Denki Kabushiki Kaisha (1)
4,321,155 Piezoelectric oxide material 6 1981