US3207920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel diode logic circuit
Assignee: Olivetti SpA
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Filing: 1961-07-28
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Granted: 1965-09-21
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Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Galletti Remo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:03
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A LOGIC CIRCUIT COMPRISING A FIRST TUNNEL DIODE AND A SECOND TUNNEL DIODE, EACH HAVING HIGH AND LOW VOLTAGE STATES, THE PEAK CURRENT RATING OF SAID SECOND TUNNEL DIODE BEING RATED HIGHER THEN THE PEAK CURRENT RATING OF SAID SECOND TUNNEL DIODE, SAID FIRST AND SECOND TUNNEL DIODES BEING CONNECTED IN SERIES WITH A CONTROL CURRENT SOURCE, INPUT MEAN COMPRISING IMPEDANCE MEANS CONNECTING AN INPUT TO THE JUNCTION POINT BETWEEN SAID SOURCE AND SAID SECOND TUNNEL DIODE FOR CONTROLLING THE CURRENT PASSING THROUGH SAID SECOND TUNNEL DIODE AND THEREBY CONTROLLING THE VOLTAGE STATE OF SAID SECOND DIODE, AND EXCITATION CURRENT MEANS CONNECTED AT THE JUNCITION BETWEEN SAID FIRST AND SECOND DIODES, SAID EXCITATION CURRENT AND SAID CONTROL CURRENT COMBINING TO CONTROL THE VOLTAGE STATE OF SAID FIRST TUNNEL DIODE.
Claim 2
Dependent Claim
129 words
A LOGIC CIRCUIT COMPRISING A FIRST TUNNEL DIODE AND A SECOND TUNNEL DIODE, EACH HAVING HIGH AND LOW VOLTAGE STATES, THE PEAK CURRENT RATING OF SAID SECOND TUNNEL DIODE BEING RATED HIGHER THEN THE PEAK CURRENT RATING OF SAID SECOND TUNNEL DIODE, SAID FIRST AND SECOND TUNNEL DIODES BEING CONNECTED IN SERIES WITH A CONTROL CURRENT SOURCE, INPUT MEAN COMPRISING IMPEDANCE MEANS CONNECTING AN INPUT TO THE JUNCTION POINT BETWEEN SAID SOURCE AND SAID SECOND TUNNEL DIODE FOR CONTROLLING THE CURRENT PASSING THROUGH SAID SECOND TUNNEL DIODE AND THEREBY CONTROLLING THE VOLTAGE STATE OF SAID SECOND DIODE, AND EXCITATION CURRENT MEANS CONNECTED AT THE JUNCITION BETWEEN SAID FIRST AND SECOND DIODES, SAID EXCITATION CURRENT AND SAID CONTROL CURRENT COMBINING TO CONTROL THE VOLTAGE STATE OF SAID FIRST TUNNEL DIODE.
References Cited (Backward Citations)
US3094631A
Cited
US3040190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |