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. 14, 1978
Filed:
Jan. 13, 1977
Applicant:
Inventors:
Masatomo Yonezawa, Tokyo, JA;
Tomeji Ohno, Tokyo, JA;
Assignee:
Nippon Electric Company, Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106 395 ; 29 2542 ; 106 735 ; 156 89 ; 252 635 ;
Abstract
A ceramic composition allowing low-temperature sintering at a temperature below 1000.degree. C and having a high dielectric constant over 5000 essentially contains Pb(Fe 2/3 W 1/3)O.sub.3 and Pb(Fe 1/3 Nb 2/3)O.sub.3, in which the molecular ratio of Pb(Fe 2/3 W 1/3)O.sub.3 to Pb(Fe 1/3 Nb 2/3)O.sub.3 ranges from about 0.2 to 0.5.