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US4499011A
Expired / Lapsed
US
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Resistance paste for a resistor body
Assignee: US Philips Corp
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Filing: 1984-05-07
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Granted: 1985-02-12
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Expires: 2004-05-07
Abstract
Abstract A resistance paste for the manufacture of a resistor body, for example, by silk-screening and the resistance body manufactured herewith, which paste comprises a mixture of Pb 2 Rh x Ru 2-x O 7-y , a permanent binder and a temporary firable binder. In the formula 0.15≦x≦0.95 and 0≦y≦1/2. The resulting resistor body in the temperature range from -55° to +150° C. has a temperature coefficient of the resistance between -10×10 -6 /°C. and +10×10 -6 /°C. and is very stable. The resistance variation during the life of the resistor is smaller than ±0.5%.
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 22:25
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; H; H01; H01C; H01C7/00; H01C7/06; A; A01; A01N; A01N43/00; A01N43/64; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; H01C17/0654
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
41 words
A resistance paste for a resistor body consisting of a mixture of a metal oxidic compound, a permanent binder and a temporary binder, characterized in that the metal oxidic compound satisfies the formula: Pb.sub.2 Rh.sub.x Ru.sub.2-x O.sub.7-y wherein 0.15≦x≦0.95 and 0≦y≦1/2.
Claim 2
Dependent Claim
41 words
A resistance paste for a resistor body consisting of a mixture of a metal oxidic compound, a permanent binder and a temporary binder, characterized in that the metal oxidic compound satisfies the formula: Pb.sub.2 Rh.sub.x Ru.sub.2-x O.sub.7-y wherein 0.15≦x≦0.95 and 0≦y≦1/2.
Claim 3
Dependent Claim
32 words
A resistance paste as claimed in claim 1, characterized in that the permanent binder is a glass having a composition in mol.%: ______________________________________
SiO.sub.2
10-45
PbO 25-35
BO.sub.1.5
20-60
AlO.sub.1.5
0-15.
______________________________________
Claim 4
Dependent Claim
32 words
A resistance paste as claimed in claim 1, characterized in that it also comprises an insulating oxide which is poorly soluble in and poorly reacts with the remaining components of said paste.
Claim 5
Dependent Claim
41 words
A resistor body comprising a substrate having lead wires covered with a resistance material, characterized in that the resistance material is a resistance paste as claimed in claim 1, from which the temporary binder has been removed by heating said paste.
Claim 6
Dependent Claim
32 words
A resistance paste as claimed in claim 2, characterized in that it also comprises an insulating oxide which is poorly soluble in and poorly reacts with the remaining components of said paste.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |