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US 4,476,039 AGranted
Stain-resistant ruthenium oxide-based resistors
AssigneeE. I. Du Pont de Nemours and Company
InventorJacob Hormadaly
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Abstract
Stain-free printable thick film resistor compositions comprising finely divided particles of (a) ruthenium oxide-based compound, (b) a thermally decomposable oxygen-containing compound of a nonalkali metal and (c) inorganic binder, all dispersed in (d) an organic medium.
Claims10
A printable thick film resistor composition consisting essentially of an admixture of finely divided particles of:
- (a) 5-75% wt. a ruthenium oxide-based compound;
- (b) 5-50% wt. an oxygen-containing nonalkali metal compound which is thermally stable below 150.degree. C. but which will decompose with the release of oxygen therefrom upon air firing of the composition at 150.degree.-1200.degree. C., the mole ratio of (a) to (b) being at least 0.1;
- and
- (c) 5-20% wt. inorganic binder, dispersed in
- (d) 5-45% wt. organic medium.
2 more elements
Dependencies are inferred from the claim text.