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US 3,944,696 AGranted
High-adhesion conductors
AssigneeE. I. Du Pont de Nemours and Company
InventorJohn Robert Larry
Life of this patent
Estimating the term…
Abstract
Glass frits for producing high-adhesion silver conductor patterns on ceramic substrates, useful in electronic circuitry. Metallizations of such frits. Conductors produced therewith.
Claims6
In electrical conductor patterns of silver or palladium silver particles plus inorganic binder therefor, adherent to a ceramic substrate, conductor patterns of improved soldering characteristics and improved adhesion to the substrate, wherein said inorganic binder is a glass consisting essentially of, by weight,
- 5-22% PbO
- 1-5% caO
- 0.7-3% al.sub.2 O.sub.3
- 0.7-2.5% b.sub.2 o.sub.3
- 5-20% siO.sub.2 and
- 50-85% Bi.sub.2 O.sub.3
3 more elements
Dependencies are inferred from the claim text.