Patent US3182204A successfully refreshed from Google Patents.
US3182204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel diode logic circuit
Assignee: Olivetti SpA
•
Filing: 1961-11-16
•
Granted: 1965-05-04
•
Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 Galletti Remo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:45
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A LOGIC "NO" CIRCUIT COMPRISING IN COMBINATION: (A) A TUNNEL DIODE HAVING FIRST AND SECOND VOLTAGE STATES, (B) MEANS FOR APPLYING AN EXCITATION CURRENT TO SAID TUNNEL DIODE, (C) AND MEANS FOR SELECTIVELY APPLYING A CONTROL CURRENT PULSE TO SAID TUNNEL DIODE, (D) SAID TUNNEL DIODE BEING SWITCHED FROM SAID FIRST TO SAID SECOND STATE UPON THE CONCURRENT APPLICATION OF SAID EXCITATION CURRENT AND SAID CONTROL CURRENT PULSE, (E) SAID PULSE APPLYING MEANS COMPRISING A CLOCK PULLSE SOURCE, A PLURALITY OF SOURCES OF INPUT SIGNALS, A CONVENTIONAL DIODE, A CONDENSER, SAID CONVENTIONAL DIODE AND SAID CONDENSER BEING CONNECTED IN SERIES BETWEEN SAID CLOCK PULSE SOURCE AND SAID TUNNEL DIODE, AND MEANS FOR CONNECTING SAID SOURCE OF INPUT SIGNALS TO THE JUNCTION POINT BETWEEN SAID CONVENTIONAL DIODE AND SAID CONDENSER, WHEREBY IN RESPONSE TO EACH INPUT SIGNAL AND CONDENSER IS CHARGED TO BLOCK SAID CONVENTIONAL DIODE.
Claim 2
Dependent Claim
145 words
A LOGIC "NO" CIRCUIT COMPRISING IN COMBINATION: (A) A TUNNEL DIODE HAVING FIRST AND SECOND VOLTAGE STATES, (B) MEANS FOR APPLYING AN EXCITATION CURRENT TO SAID TUNNEL DIODE, (C) AND MEANS FOR SELECTIVELY APPLYING A CONTROL CURRENT PULSE TO SAID TUNNEL DIODE, (D) SAID TUNNEL DIODE BEING SWITCHED FROM SAID FIRST TO SAID SECOND STATE UPON THE CONCURRENT APPLICATION OF SAID EXCITATION CURRENT AND SAID CONTROL CURRENT PULSE, (E) SAID PULSE APPLYING MEANS COMPRISING A CLOCK PULLSE SOURCE, A PLURALITY OF SOURCES OF INPUT SIGNALS, A CONVENTIONAL DIODE, A CONDENSER, SAID CONVENTIONAL DIODE AND SAID CONDENSER BEING CONNECTED IN SERIES BETWEEN SAID CLOCK PULSE SOURCE AND SAID TUNNEL DIODE, AND MEANS FOR CONNECTING SAID SOURCE OF INPUT SIGNALS TO THE JUNCTION POINT BETWEEN SAID CONVENTIONAL DIODE AND SAID CONDENSER, WHEREBY IN RESPONSE TO EACH INPUT SIGNAL AND CONDENSER IS CHARGED TO BLOCK SAID CONVENTIONAL DIODE.
References Cited (Backward Citations)
US3027465A
Cited
US3054002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |