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:
Jan. 17, 1978
Filed:
Jun. 30, 1976
Applicant:
Inventors:
Ikuo Nagasawa, Kawasaki, JA;
Kazuo Mukae, Kawasaki, JA;
Takashi Ishii, Kawasaki, JA;
Koichi Tsuda, Kawasaki, JA;
Assignee:
Fuji Electric Co., Ltd., Kawasaki, JA;
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; H01C / ; H01C / ;
U.S. Cl.
CPC ...
106 732 ; 252519 ; 252521 ; 338 20 ;
Abstract
Ceramics having nonlinear voltage characteristics in which (1) zinc oxide is used as a main component and (2) praseodymium, (3) one or more of magnesium or calcium, and (4) cobalt are added thereto as subcomponents, in elemental form or as a compound thereof, in an amount of from about 0.08 to about 10.0 atomic % for praseodymium, from about 0.08 to about 10.0 atomic % for the one or more of magnesium or calcium, and from about 0.1 to about 8.0 atomic % for the cobalt, each calculated as praseodymium, magnesium or calcium and cobalt.