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:
Jun. 09, 1981
Filed:
Mar. 08, 1979
Applicant:
Inventors:
Theodore O Sokoly, Racine, WI (US);
John Niedzialkowski, Milwaukee, WI (US);
Assignee:
Electric Power Research Institute, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252516 ; 252518 ; 252519 ; 264 61 ; 264104 ; 338 20 ;
Abstract
A composition is provided for use in forming varistor blocks containing mostly zinc oxide together with other impurities, including significant amounts of silicon carbide to a concentration of less than one molar percent of the total varistor composition. The method of forming varistor blocks according to the invention includes mixing zinc oxide powder together with the silicon carbide and other impurities, and then sintering the mixture at a temperature in the range of from approximately 1100.degree. C. to approximately 1250.degree. C.