US3249891A
Expired / Lapsed
US
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Oscillator apparatus utilizing esaki diode
Assignee: International Business Machines Corp
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Filing: 1964-10-29
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Granted: 1966-05-03
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Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Richard F Rutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:02
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/16; H03K19/162; H03B; H03B7/00; H03B7/02; H03B7/06; H03B7/08; H03B7/12; H03B7/14; H03K19/08; H03K19/10; H03K3/00; H03K3/02; H03K3/313; H03K3/315; H10; H10D; H10D99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/979
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
A LOOP CIRCUIT HAVING A NATURAL FREQUENCY OF OSCILLATION AND CONSISTING OF: (A) AN ESAKI DIODE HAVING A NEGATIVE RESISTANCE REGION IN ITS POTENTIAL-CURRENT CHARACTERISTIC; (B) A RESISTIVE IMPEDANCE HAVING A POTENTIAL-CURRENT CHARACTERISTIC INTERSECTING THE POTENTIAL-CURRENT CHARACTERISTIC OF THE ESAKI DIODE, AND HAVING A RESISTANCE LESS THAN THE NEGATIVE RESISTANCE OF THE ESAKI DIODE OVER AT LEAST A PORTION OF SAID NEGATIVE RESISTANCE REGION, AND (C) TWO ELECTRICALLY CONDUCTIVE ELEMENTS CONNECTING THE DIODE AND THE IMPEDANCE IN A LOOP CIRCUIT; (D) SAID CONDUCTIVE ELEMENTS, SAID DIODE AND SAID IMPEDANCE HAVING INHERENT INDUCTANCE AND CAPACITANCE WHICH ARE SOLELY DETERMINATIVE OF THE NATURAL FREQUENCY OF OSCILLATION OF SAID LOOP CIRCUIT, AND HAVING DIMENSIONS SMALL ARE COMPARED WITH THE WAVE LENGTH CORRESPONDING TO SAID FREQUENCY.
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |