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. 10, 2002
Filed:
Aug. 21, 2001
Applicant:
Inventors:
Yukihiro Kamoshida, Yokaichi, JP;
Kazutaka Nakamura, Shiga-ken, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H01C 7/10 ;
U.S. Cl.
CPC ...
H01C 7/10 ;
Abstract
A voltage non-linear resistor which makes a SiC-based varistor exhibiting low apparent relative dielectric constant and the voltage nonlinearity coefficient a at the same level as ZnO-based varistors is provided. The voltage non-linear resistor includes semiconductive SiC particles doped with an impurity, each of the semiconductive SiC particles having an oxide layer formed on the surface thereof. The oxide layer has a thickness in the range of about 5 to 100 nm and has aluminum diffused therein. A method for making the voltage non-linear resistor and a varistor using the same are also provided.