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:
May. 26, 1992
Filed:
Jul. 12, 1990
Applicant:
Inventors:
Assignee:
Somar Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; H01C / ;
U.S. Cl.
CPC ...
252518 ; 264 61 ; 423596 ;
Abstract
A varistor material is disclosed which has a composition consisting essentially of 93-97 mole % of ZnO and 3-7 mole % of MnO, a non-linear coefficient .alpha. of at least 20 and such a bulk density as to provide a porosity of greater than 15% but not greater than 50%, wherein the porosity is defined as follows:
Ochi, Hideo. (1992). Varistor material and method of producing same from zinc oxide and (U.S. Patent No. 5116542). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5116542
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