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:
Dec. 30, 1997
Filed:
Feb. 06, 1997
Applicant:
Inventors:
Akinori Nakayama, Otsu, JP;
Terunobi Ishikawa, Toyonaka, JP;
Hiroshi Takagi, Otsu, JP;
Yukio Sakabe, Kyoto, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501152 ; 501132 ; 252519 ;
Abstract
Provided is a semiconductive ceramic composition comprising a lanthanum cobalt oxide and having a negative resistance-temperature characteristic, which contains, as the side component, a chromium oxide in an amount of from about 0.005 to 30 mol % in terms of chromium, and also a semiconductive ceramic device comprising the composition. The device is usable for rush current inhibition, for motor start-up retardation and for halogen lamp protection, and is also usable in temperature-compensated crystal oscillators.