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:
Sep. 16, 2003
Filed:
Oct. 10, 2002
Kazutaka Nakamura, Shiga-ken, JP;
Yukihiro Kamoshida, Yokaichi, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
A voltage nonlinear resistor is composed of an aggregate of silicon carbide particles doped with impurities, in which oxygen and at least one of aluminum and boron are diffused in the vicinity of the surfaces of the silicon carbide particles, the diffusion length of the oxygen is about 100 nm or less from the surfaces of the silicon carbide particles, and the diffusion length of at least one of the aluminum and the boron is in the range of about 5 to 100 nm from the surfaces of the silicon carbide particles. A method for fabricating a voltage nonlinear resistor and a varistor using a voltage nonlinear resistor are also disclosed.