Patent US4415486A successfully refreshed from Google Patents.
US4415486A
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US
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Resistive paste for a resistor body
Assignee: US Philips Corp
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Filing: 1982-06-01
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Granted: 1983-11-15
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Expires: 2002-06-01
Abstract
Abstract Resistive paste for manufacturing a resistor body by means of screen-printing the paste on a substrate, followed by firing. The paste comprises a silver-palladium alloy, a metal oxidic compound which contains either PdO and/or can react therewith, a permanent and a temporary binder. The metal oxidic compound may be provided as a layer on the AgPd particles or be mixed therewith. The result is a low-ohmic resistor having a ¦TRC¦<100x10-6/ DEG C. in the range from -60 DEG to +200 DEG C.
Inventors
- 👤 Alexander H. Boonstra
- 👤 Cornelis A. H. A. Mutsaers
- 👤 Franciscus N. G. R. Van der Kruijs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:44
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/06; B; B22; B22F; B22F1/00; B22F1/16; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06553
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
A resistive material suitable for the production of a resistor body consisting of a mixture of glass powder and a silver-palladium composition selected from the group consisting of a silver palladium rhodite compound of the formula Ag x P 1-x RhO 2 wherein 0.05≦x≦0.15, a mixture of alloys consisting of silver and palladium and said compound, and alloys consisting of silver and palladium the particles of which are coated with palladium rhodite of the formula Pd RhO 2 .
Claim 2
Dependent Claim
79 words
A resistive material suitable for the production of a resistor body consisting of a mixture of glass powder and a silver-palladium composition selected from the group consisting of a silver palladium rhodite compound of the formula Ag x P 1-x RhO 2 wherein 0.05≦x≦0.15, a mixture of alloys consisting of silver and palladium and said compound, and alloys consisting of silver and palladium the particles of which are coated with palladium rhodite of the formula Pd RhO 2 .
Claim 3
Dependent Claim
28 words
A resistive paste as claimed in claim 1, characterized in that the particles of the Ag-Pd alloy are coated with a layer of palladium rhodite PdRhO 2 .
Claim 4
Dependent Claim
23 words
A resistive paste as claimed in claim 1, characterized in that said paste comprises the compound Ag x Pd 1-x RhO 2 .
Claim 5
Dependent Claim
33 words
A resistor consisting of an aluminum oxide substrate at least one surface of which is provided with a coating of the resistive material of claim 1 and conductive leads extending from said coating.
References Cited (Backward Citations)
US3857798A
Cited
US3851228A
Cited
US3876560A
Cited
US3914514A
Cited
US4001146A
Cited
US4186423A
Cited
US4184192A
Cited
US4286251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |