Patent US3889358A successfully refreshed from Google Patents.
Patent US2901442A successfully refreshed from Google Patents.
US2901442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistors and resistor materials
Assignee: GE Healthcare UK Ltd
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Filing: 1958-02-24
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Granted: 1959-08-25
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Expires: 1978-02-24
Abstract
No abstract record available.
Inventors
- 👤 John B Huffadine
- 👤 Roy W Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:09
CPC Classifications
H; H01; H01C; H01C7/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
AN ELECTRICAL RESISTOR WHICH COMPRISES A RESISTIVE BODY CONSISTING OF A COMPACT SINTERED INSULATION MIXTURE OF MOLYBDENUM DISILICIDE PARTICLES AND ALUMINA PARTICLES CONTAINING 15 TO 30% BY WEIGHT OF MOLYBDENUM DISILICIDE, ADJACENT MOLYBDENUM DISILICIDE PARTICLES BEING SEPARATED BY ALUMINA PARTICLES, WHEREIN THE INSULATION BETWEEN ADJACENT MOLYBDENUM DISILICIDE PARTICLES IS BRIDGED RESISTIVELY BY THE INCORPORATION OF ELEMENTAL CARBON IN THE SINTERED MIXTURE, THE ELEMENTAL CARBON FORMING 1/2 TO 3% BY WEIGHT OF THE MIXTURE.
Claim 2
Dependent Claim
73 words
AN ELECTRICAL RESISTOR WHICH COMPRISES A RESISTIVE BODY CONSISTING OF A COMPACT SINTERED INSULATION MIXTURE OF MOLYBDENUM DISILICIDE PARTICLES AND ALUMINA PARTICLES CONTAINING 15 TO 30% BY WEIGHT OF MOLYBDENUM DISILICIDE, ADJACENT MOLYBDENUM DISILICIDE PARTICLES BEING SEPARATED BY ALUMINA PARTICLES, WHEREIN THE INSULATION BETWEEN ADJACENT MOLYBDENUM DISILICIDE PARTICLES IS BRIDGED RESISTIVELY BY THE INCORPORATION OF ELEMENTAL CARBON IN THE SINTERED MIXTURE, THE ELEMENTAL CARBON FORMING 1/2 TO 3% BY WEIGHT OF THE MIXTURE.
References Cited (Backward Citations)
US2622304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |