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:
Oct. 29, 1991
Filed:
Oct. 27, 1989
Fujio Ishiguro, Nagoya, JP;
Toru Kikuchi, Nagoya, JP;
NGK Insulators, Ltd., Aichi, JP;
Abstract
A detecting element having desired values for electrical resistance and resistance temperature coefficient can be obtained in a simple manner by a method wherein an electrically conductive member is arranged on a substrate, a metal lead is fixed to the substrate in order to connect the electrically conductive member to an external circuit through the metal lead, and the electrically conductive member is subjected to a heat treatment. Specifically, an electrical current is passed through the electrically conductive member to heat the detecting element before completion to a predetermined temperature and to form a glass protecting film by the heat generation of the member itself.