US4101708A
Expired / Lapsed
US
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Resistor compositions
Assignee: EIDP Inc
•
Filing: 1977-03-25
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Granted: 1978-07-18
•
Expires: 1997-03-25
Abstract
Abstract Resistor compositions of inorganic powders dispersed in an inert vehicle, for making film resistors on dielectric substrates. The powders comprise certain proportions of RuO 2 , PbO-containing glass, Nb 2 O 5 and, optionally, CaF 2 . Also sintered resistors thereof adherent to such substrates.
Inventors
- 👤 John Robert Larry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:41
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; H01C17/0654
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
62 words
Printable compositions of finely divided inorganic powder dispersed in an inert liquid vehicle for producing film resistors adherent to a dielectric substrate, the compositions consisting essentially of, by weight, a dispersion of (1) 2-45% finely divided RuO 2 powder (2) 40-70% glass comprising 30-55% PbO, (3) 0.1-0.8% nb 2 O 5 , (4) 0-5% caF 2 , and (5) 15-40% inert vehicle.
Claim 2
Dependent Claim
62 words
Printable compositions of finely divided inorganic powder dispersed in an inert liquid vehicle for producing film resistors adherent to a dielectric substrate, the compositions consisting essentially of, by weight, a dispersion of (1) 2-45% finely divided RuO 2 powder (2) 40-70% glass comprising 30-55% PbO, (3) 0.1-0.8% nb 2 O 5 , (4) 0-5% caF 2 , and (5) 15-40% inert vehicle.
Claim 3
Dependent Claim
29 words
Compositions according to claim 1 of (1) 3-30% RuO 2 , (2) 45-65% glass, (3) 0.2-0.7% Nb 2 O 5 , (4) 0-5% caF 2 and (5) 20-40% vehicle.
Claim 4
Dependent Claim
11 words
Compositions according to claim 2 wherein glass (2) comprises 40-45% PbO.
Claim 5
Dependent Claim
12 words
Compositions according to claim 2 wherein (4) is 1-3% CaF 2 .
Claim 6
Dependent Claim
12 words
Compositions according to claim 3 wherein (4) is 1-3% CaF 2 .
Claim 7
Dependent Claim
35 words
Compositions according to claim 2 of (1) 4-20% RuO 2 , (2) 47-62% of a glass comprising 40-45% PbO, (3) 0.2-0.7% nb 2 O 5 , (4) 1-3% caF 2 , and (5) 20-40% vehicle.
Claim 8
Dependent Claim
14 words
Dielectric substrates having adherent thereto sintered film resistors of the composition of claim 1.
Claim 9
Dependent Claim
14 words
Dielectric substrates having adherent thereto sintered film resistors of the composition of claim 2.
Claim 10
Dependent Claim
14 words
Dielectric substrates having adherent thereto sintered film resistors of the composition of claim 3.
Claim 11
Dependent Claim
14 words
Dielectric substrates having adherent thereto sintered film resistors of the composition of claim 6.
References Cited (Backward Citations)
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US3679607A
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US3778389A
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US3637530A
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US3868334A
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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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |