US3149298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neel effect switching device
Assignee: AT&T Inc
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Filing: 1960-12-09
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Granted: 1964-09-15
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Expires: 1980-12-09
Abstract
No abstract record available.
Inventors
- 👤 Eileen T Handelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:11
CPC Classifications
H; H03; H03K; H03K17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A SIGNAL TRANSLATING SYSTEM INCLUDING A SIGNAL TRANSLATING MEANS COMPRISING AS AN ACTIVEELEMENT A BODY OF A SINGLE COMPOUND SELECTED FROM A GROUP OF COMPOUNDS OF THE 3-D TRANSITION METALS WHICH EXHIBITS A SUBSTANTIAL AND ABRUPT CHANGE IN CONDUCTIVITY AT A CHARACTERISTIC TEMPERATURE, COUPLED WITH MEANS FOR REDUCING THE AMBIENT TEMPERATURE BELOW -110 DEGREES CENTIGRADE, ELECTRICAL INPUT MEANS FOR RAISING THE TEMPERATURE OF SAID ACTIVE ELEMENT FROM THE AMBIENT TEMPERATURE TO SAID CHARACTERISTIC TEMPERATURE, AND SIGNAL MEANS FOR VARYING THE TEMPERATURE OF SAID CRYSTAL ABOUT SAID CHARACTERISTIC TEMPERATURE.
Claim 2
Dependent Claim
88 words
A SIGNAL TRANSLATING SYSTEM INCLUDING A SIGNAL TRANSLATING MEANS COMPRISING AS AN ACTIVEELEMENT A BODY OF A SINGLE COMPOUND SELECTED FROM A GROUP OF COMPOUNDS OF THE 3-D TRANSITION METALS WHICH EXHIBITS A SUBSTANTIAL AND ABRUPT CHANGE IN CONDUCTIVITY AT A CHARACTERISTIC TEMPERATURE, COUPLED WITH MEANS FOR REDUCING THE AMBIENT TEMPERATURE BELOW -110 DEGREES CENTIGRADE, ELECTRICAL INPUT MEANS FOR RAISING THE TEMPERATURE OF SAID ACTIVE ELEMENT FROM THE AMBIENT TEMPERATURE TO SAID CHARACTERISTIC TEMPERATURE, AND SIGNAL MEANS FOR VARYING THE TEMPERATURE OF SAID CRYSTAL ABOUT SAID CHARACTERISTIC TEMPERATURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |