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:
Mar. 17, 1992
Filed:
May. 23, 1990
Applicant:
Inventor:
Lyle H Slack, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252514 ; 252518 ; 524439 ; 524434 ;
Abstract
A thick film low-end resistor composition comprising an admixture of finely divided particles of (a) silver, palladium, an alloy of palladium and silver, or mixtures thereof; (b) an admixture of (1) glass having a softening point of 350.degree. to 500.degree. C., which when molten is wetting with respect to the other solids in the composition, and (2) glass having a softening point of 550.degree. to 650.degree. C.; and (c) 5-20% by volume, basis total solids, of sub-micron particles of RuO.sub.2, all of (a) through (c) being dispersed in (d) an organic medium.