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:
Aug. 30, 1977
Filed:
Oct. 10, 1975
Applicant:
Inventors:
Masahiro Nagasawa, Hirakata, JA;
Yasuo Wakahata, Chitose, JA;
Kensuke Kuchiba, Hirakata, JA;
Kunio Nishi, Chitose, JA;
Hiroshi Abe, Moriguchi, JA;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252517 ; 252518 ; 252519 ; 252521 ;
Abstract
A voltage-dependent resistor (varistor) of the bulk type comprising a sintered body consisting essentially of, as a main constituent, ZnO and additives of various metal oxides and further containing an additive of at least one of Al.sub.2 O.sub.3, In.sub.2 O.sub.3 Ga.sub.2 O.sub.3 provide much improved characteristics, especially superior limiting voltage ratio, surge resistance and life of the varistor.