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:
Jun. 29, 1982
Filed:
May. 20, 1980
Applicant:
Inventors:
David A Payne, Champaign, IL (US);
Sang M Park, Champaign, IL (US);
Otto C Jahnke, El Cajon, CA (US);
Assignee:
University of Illinois Foundation, Urbana, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
252 / ; 252520 ; 252521 ; 501136 ;
Abstract
An improved polycrystalline semiconducting ceramic composition comprises an alkaline earth metal titanate doped with a hexavalent metal oxide such as (MO.sub.3)(Bi.sub.2 O.sub.3).sub.x where M is tungsten or molybdenum, and x ranges from 0 to 7, which is liquid phase sintered with lead germanate to produce internal insulating boundaries. The composition is fine grained and provides thin-layer, multi-layer capacitors that exhibit high dielectric constant values, low dissipation factors, and low temperature and voltage coefficients of capacitance.