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:
Nov. 14, 2000
Filed:
May. 28, 1999
Applicant:
Inventors:
Tetsuji Hayasaki, Hayato-cho, JP;
Masahiro Okumura, Yasu-cho, JP;
Assignee:
Kyocera Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
2525181 ; 2525195 ; 25251954 ; 2525212 ; 2525213 ; 2525215 ; 252500 ; 360 9701 ; 360 98 ; 360135 ;
Abstract
A semiconductive ceramic contains a compound of MgO and SiO.sub.2 as a main component, and an iron oxide such as FeO, Fe.sub.2 O.sub.3, and Fe.sub.3 O.sub.4 as an electric conductivity provider. According to necessity, the semiconductive ceramic further contains at least one of zinc oxide, niobium oxide, and chromium oxide as an electric conductivity provider. The semiconductive ceramic has a desired electric conductivity and a mechanical strength required for structural material, thus being usable in various applications.