US3225220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logic circuit using storage diodes to achieve nrz operation of a tunnel diode
Assignee: Unisys Corp
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Filing: 1963-08-29
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Granted: 1965-12-21
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Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Cubert Jack Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:44
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10; H03K3/00; H03K3/02; H03K3/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
A NON-INVERTING LOGIC CIRCUIT COMPRISING, AT LEAST ONE INPUT MEANS FOR SUPPLYING INPUT SIGNALS HAVING TWO DIFFERENT LEVELS, A BISTABLE DEVICE EXHIBITING NEGATIVE RESISTANCE CHARACTERISTICS BETWEEN DIFFERENT STABLE OPERATING REGIONS, A FIRST CURRENT SOURCE CONNECTED TO SAID BISTABLE DEVICE TO BIAS SAID DEVICE FOR BISTABLE OPERATION, FIRST UNILATERALLY CONDUCTING MEANS CONNECTED BETWEEN SAID BISTABLE DEVICE AND SAID INPUT MEANS, A SECOND CURRENT SOURCE, FIRST CHARGE STORAGE MEANS CONNECTED BETWEEN SAID SECOND CURRENT SOURCE AND SAID INPUT MEANS, SAID FIRST CHARGE STORAGE MEANS EXHIBITING CHARGE STORING CAPABILITIES ONLY WHEN SAID INPUT SIGNAL HAS ONE LEVEL BUT NOT WHEN SAID INPUT HAS A DIFFERENT LEVEL, A TRANSFORMER HAVING ONE TERMINAL OF EACH OF THE PRIMARY AND SECONDARY WINDINGS THEREOF CONNECTED TO SAID SECOND CURRENT SOURCE, SECOND UNILATERALLY CONDUCTING MEANS CONNECTED BETWEEN SAID BISTABLE DEVICE AND ANOTHER TERMINAL OF SAID PRIMARY WINDING OF SAID TRANSFORMER, SECOND CHARGE STORAGE MEANS CONNECTED BETWEEN SAID SECOND CURRENT SOURCE AND ANOTHER TERMINAL OF SAID SECONDARY WINDING OF SAID TRANSFORMER AND EXHIBITING CHARGE STORING CAPABILITIES ONLY WHEN SAID FIRST CHARGE STORAGE MEANS IS NOT STORING CHARGE THEREIN, AND A SOURCE OF PERIODIC PULSES CONNECTED TO SAID FIRST AND SECOND CHARGE STORAGE MEANS FOR ALTERNATIVELY CAUSING REVERSE CURRENT IN ONE OF SAID CHARGE STORAGE MEANS SUBSEQUENT TO THE STORAGE OF CHARGE THEREIN.
Claim 2
Dependent Claim
213 words
A NON-INVERTING LOGIC CIRCUIT COMPRISING, AT LEAST ONE INPUT MEANS FOR SUPPLYING INPUT SIGNALS HAVING TWO DIFFERENT LEVELS, A BISTABLE DEVICE EXHIBITING NEGATIVE RESISTANCE CHARACTERISTICS BETWEEN DIFFERENT STABLE OPERATING REGIONS, A FIRST CURRENT SOURCE CONNECTED TO SAID BISTABLE DEVICE TO BIAS SAID DEVICE FOR BISTABLE OPERATION, FIRST UNILATERALLY CONDUCTING MEANS CONNECTED BETWEEN SAID BISTABLE DEVICE AND SAID INPUT MEANS, A SECOND CURRENT SOURCE, FIRST CHARGE STORAGE MEANS CONNECTED BETWEEN SAID SECOND CURRENT SOURCE AND SAID INPUT MEANS, SAID FIRST CHARGE STORAGE MEANS EXHIBITING CHARGE STORING CAPABILITIES ONLY WHEN SAID INPUT SIGNAL HAS ONE LEVEL BUT NOT WHEN SAID INPUT HAS A DIFFERENT LEVEL, A TRANSFORMER HAVING ONE TERMINAL OF EACH OF THE PRIMARY AND SECONDARY WINDINGS THEREOF CONNECTED TO SAID SECOND CURRENT SOURCE, SECOND UNILATERALLY CONDUCTING MEANS CONNECTED BETWEEN SAID BISTABLE DEVICE AND ANOTHER TERMINAL OF SAID PRIMARY WINDING OF SAID TRANSFORMER, SECOND CHARGE STORAGE MEANS CONNECTED BETWEEN SAID SECOND CURRENT SOURCE AND ANOTHER TERMINAL OF SAID SECONDARY WINDING OF SAID TRANSFORMER AND EXHIBITING CHARGE STORING CAPABILITIES ONLY WHEN SAID FIRST CHARGE STORAGE MEANS IS NOT STORING CHARGE THEREIN, AND A SOURCE OF PERIODIC PULSES CONNECTED TO SAID FIRST AND SECOND CHARGE STORAGE MEANS FOR ALTERNATIVELY CAUSING REVERSE CURRENT IN ONE OF SAID CHARGE STORAGE MEANS SUBSEQUENT TO THE STORAGE OF CHARGE THEREIN.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |