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:
Dec. 30, 1997
Filed:
Jul. 11, 1995
Richard E Riley, Riverside, CA (US);
Spectrol Electronics Corporation, Ontario, CA;
Abstract
A thick-film switch element includes a high-temperature glass frit fused to a non-conductive substrate. A cermet layer having a low-temperature glass matrix is fired in a conventional furnace to sink into the glass frit layer such that the resulting thickness of the switch element layer is approximately equal to the original thickness of the glass frit layer. The wet print thickness of the cermet layer is controlled upon application of the cermet to the glass frit. The glass frit and cermet are fired at a controlled temperature and duration to achieve a fired print thickness of the cermet above the surface of the glass frit having a pre-determined value. In one embodiment, the non-conductive substrate is a metal, such as stainless steel.