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. 26, 1980
Filed:
May. 15, 1978
Applicant:
Inventor:
Herbert R Philipp, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
264 66 ; 252518 ; 252521 ; 264104 ;
Abstract
A method for producing varistors exhibiting improved upturn characteristics comprises controllably heating a pressed varistor powder mix to a temperature, and for a time, sufficient to form a ceramic material, and then quenching the ceramic material at a rate in excess of approximately 500.degree. C. per hour. The method is particularly advantageous when dopants such as aluminum, antimony, indium, and gallium are employed. Additionally, a surge arrester is disclosed comprising a varistor connected in series with a spark gap, the varistor being produced in accordance with the aforementioned quenching method.