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:
Oct. 13, 1987
Filed:
Mar. 29, 1985
Applicant:
Inventor:
Yoshikazu Tanno, Kanagawa, JP;
Assignee:
Kabushiki Kaisha Toshiba, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338 21 ; 252519 ; 338308 ; 427101 ; 4271266 ; 4273762 ;
Abstract
A high resistivity layer is disclosed for a medal oxide voltage-nonlinear resistor (varistor) for arrestors and surge absorbers of the type having a sintered body containing zinc oxide as a major component and two spaced electrodes attached to the surface of the body wherein the electrodes are insulated from one another by the high resistivity layer. The high resistivity layer of the invention consists essentially of at least zinc ferrate (III). The high resistivity layer is formed by sintering a slurry containing ferric oxide (Fe.sub.2 O.sub.3) as a major component.