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. 21, 1977
Filed:
Oct. 24, 1975
Masahiro Hayashi, Tokyo, JA;
Masanori Haba, Tokyo, JA;
Misuzu Watanabe, Tokyo, JA;
Shinji Hirano, Tokyo, JA;
Kabushiki Kaisha Meidensha, Tokyo, JA;
Abstract
A non-linear voltage dependent resistor having a non-ohmic resistance element and an electrically insulating coating formed thereon, obtained by firing a formed element containing zinc oxide and a coating material applied thereon, at a temperature between 900.degree. and 1,400.degree. C, the coating material including a mixture of ZnO, SiO.sub.2, Bi.sub.2 O.sub.3 and Sb.sub.2 O.sub.3. There is formed a firm joint between the resistance element and the insulating coating and the insulating coating has a composition structure wherein fine constituent grains are closely packed whereby the occurrence of a flashover is prevented.