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. 27, 1980
Filed:
Nov. 20, 1978
Howard E Shapiro, Philadelphia, PA (US);
Kenneth M Merz, Gladwyne, PA (US);
TRW Inc., Cleveland, OH (US);
Abstract
A vitreous enamel resistor material comprising a mixture of a vitreous glass frit and fine particles of tantalum nitride (Ta.sub.2 N). The vitreous enamel resistor material may also include fine particles selected from boron, tantalum, silicon, zirconium dioxide (ZrO.sub.2), and magnesium zirconate (MgZrO.sub.3). An electrical resistor is made from the resistor material by applying the material to a substrate and firing the coated substrate to a temperature at which the glass melts. Upon cooling, the substrate has on a surface thereof a film of glass having the tantalum nitride particles and particles of the additive material, if used, embedded therein and dispersed therethroughout.