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:
Mar. 13, 1984
Filed:
Jul. 14, 1982
Applicant:
Inventor:
Leslie J Bowen, Waltham, MA (US);
Assignee:
GTE Laboratories Incorporated, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252518 ; 252519 ; 252520 ; 252521 ; 252512 ; 338 20 ; 338 21 ;
Abstract
The breakdown voltage of a zinc oxide varistor is lowered by increasing the grain size of the zinc oxide using Al.sup.+3 as a zinc oxide grain growth promoting agent and the varistor's resistance to high energy electrical surges is increased by an grain boundary barrier layer stabilizer such as Na.sup.+, K.sup.+, Rb.sup.+, or Cs.sup.+.