US3303350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor switching circuits
Assignee: International Business Machines Corp
•
Filing: 1959-12-21
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Granted: 1967-02-07
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Gordon W Neff
- 👤 Hannon S Yourke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:54
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A CIRCUIT COMPRISING, A TUNNEL DIODE EXHIBITING A CURRENT DRIVEN NEGATIVE RESISTANCE CURRENT-POTENTIAL CHARACTERISTIC, AN INDUCTOR ELEMENT, A SEMICONDUCTOR ELEMENT EXHIBITING A NON-LINEAR IMPEDANCE CHARACTERISTIC HAVING AN EMITTER, BASE AND COLLECTOR ELECTRODES, MEANS CONNECTING SAID ELEMENTS IN PARALLEL WITH SAID DIODE, AND MEANS FOR ENERGIZING THE BASE ELECTRODE OF SAID SEMICONDUCTOR TO CONTROLLABLY ALTER THE IMPEDANCE OF SAID SEMICONDUCTOR.
Claim 2
Dependent Claim
59 words
A CIRCUIT COMPRISING, A TUNNEL DIODE EXHIBITING A CURRENT DRIVEN NEGATIVE RESISTANCE CURRENT-POTENTIAL CHARACTERISTIC, AN INDUCTOR ELEMENT, A SEMICONDUCTOR ELEMENT EXHIBITING A NON-LINEAR IMPEDANCE CHARACTERISTIC HAVING AN EMITTER, BASE AND COLLECTOR ELECTRODES, MEANS CONNECTING SAID ELEMENTS IN PARALLEL WITH SAID DIODE, AND MEANS FOR ENERGIZING THE BASE ELECTRODE OF SAID SEMICONDUCTOR TO CONTROLLABLY ALTER THE IMPEDANCE OF SAID SEMICONDUCTOR.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |