US4520342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor
Assignee: Barkbooks Corp
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Filing: 1983-07-25
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Granted: 1985-05-28
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Expires: 2003-07-25
Abstract
Abstract A resistor having of an insulating substrate bearing a thin layer of the alloy CrSi x , where 1≦x≦5 and which layer is doped with nitrogen. The doping may be spread homogeneously throughout the thickness or be concentrated in one or two thickness zones on the outside and/or on the side adjoining the substrate. As a result of the nitrogen doping an improvement of the stability of the resistor is obtained.
Inventors
- 👤 Ludovicus Vugts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:24
CPC Classifications
H; H01; H01C; H01C7/00; H01C17/00; H01C17/06; H01C17/075; H01C17/12; H01C7/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A resistor comprising an insulating substrate on which a thin layer of a chromium silicon alloy is attached, said layer having the composition CrSi x , where 1≦x≦5, said layer being doped by nitrogen, characterized in that: said substrate has two superimposed layers, one of said layers consisting of said doped chromium silicon alloy containing nitrogen in a quantity of at least 1 at.% and at most 10 at.%; and the other layer consisting of said chromium silicon alloy in the non-doped state.
Claim 2
Dependent Claim
83 words
A resistor comprising an insulating substrate on which a thin layer of a chromium silicon alloy is attached, said layer having the composition CrSi x , where 1≦x≦5, said layer being doped by nitrogen, characterized in that: said substrate has two superimposed layers, one of said layers consisting of said doped chromium silicon alloy containing nitrogen in a quantity of at least 1 at.% and at most 10 at.%; and the other layer consisting of said chromium silicon alloy in the non-doped state.
Claim 3
Dependent Claim
28 words
A resistor as claimed in claim 1, characterized in that the doping is present in at least one layer, on the outside in combination with a non-doped layer.
Claim 4
Dependent Claim
31 words
A resistor as claimed in claim 1, characterized in that the doping is present in at least one layer on the side adjoining the substrate in combination with a non-doped layer.
References Cited (Backward Citations)
US4392992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |