US3211984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charge storage circuit
Assignee: International Business Machines Corp
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Filing: 1961-11-28
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Granted: 1965-10-12
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Expires: 1981-11-28
Abstract
No abstract record available.
Inventors
- 👤 Richard W Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:25
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/02; G11C27/024; H; H03; H03K; H03K5/00; H03K5/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A COMPENSATED CHARGE STORAGE CIRCUIT COMPRISING: A FIRST SWITCHING MEANS FED BY A VOLTAGE TO BE STORED; A CAPACITOR CONNECTED TO THE OUTPUT SIDE OF SAID FIRST SWITCHING MEANS; A SECOND SWITCHING MEANS SHUNTED AROUND SAID STORAGE CAPACITOR FOR CLEARING SAID CAPACITOR OF CHARGE PRIOR TO A CHARGE STORAGE CYCLE; A UNIDIRECTIONAL CURRENT MEANS INTERCONNECTING A PREDETERMINED ONE OF THE COMMON POINTS OF SAID SECOND SWITCHING MEANS AND SAID STORAGE CAPACITOR IN A FORWARDLY DIRECTION TO GROUND; AN NPN TRANSISTOR HAVING ITS EMITTER CONNECTED TO THE SAID PREDETERMINED COMMON POINT OF SAID UNDIRECTIONAL CURRENT MEANS AND SAID STORAGE CAPACITOR AND A GROUNDED BASE; AND A PNP TRANSISTOR HAVING ITS BASE FED BY THE COLLECTOR OF SAID NPN TRANSISTOR, ITS EMITTER BIASED POSITIVELY AND THE COLLECTOR CONNECTED TO THE OTHER OF SAID COMMON POINTS, SAID COLLECTOR SERVING AS AN OUTPUT FOR THE CIRCUIT.
Claim 2
Dependent Claim
142 words
A COMPENSATED CHARGE STORAGE CIRCUIT COMPRISING: A FIRST SWITCHING MEANS FED BY A VOLTAGE TO BE STORED; A CAPACITOR CONNECTED TO THE OUTPUT SIDE OF SAID FIRST SWITCHING MEANS; A SECOND SWITCHING MEANS SHUNTED AROUND SAID STORAGE CAPACITOR FOR CLEARING SAID CAPACITOR OF CHARGE PRIOR TO A CHARGE STORAGE CYCLE; A UNIDIRECTIONAL CURRENT MEANS INTERCONNECTING A PREDETERMINED ONE OF THE COMMON POINTS OF SAID SECOND SWITCHING MEANS AND SAID STORAGE CAPACITOR IN A FORWARDLY DIRECTION TO GROUND; AN NPN TRANSISTOR HAVING ITS EMITTER CONNECTED TO THE SAID PREDETERMINED COMMON POINT OF SAID UNDIRECTIONAL CURRENT MEANS AND SAID STORAGE CAPACITOR AND A GROUNDED BASE; AND A PNP TRANSISTOR HAVING ITS BASE FED BY THE COLLECTOR OF SAID NPN TRANSISTOR, ITS EMITTER BIASED POSITIVELY AND THE COLLECTOR CONNECTED TO THE OTHER OF SAID COMMON POINTS, SAID COLLECTOR SERVING AS AN OUTPUT FOR THE CIRCUIT.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |