US3196405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable capacitance information storage system
Assignee: International Business Machines Corp
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Filing: 1961-12-18
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Granted: 1965-07-20
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 John B Gunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:17
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/401; G11C11/403; G11C11/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A BINARY INFORMATION STORAGE MATRIX COMPRISING A PLURALITY OF PAIRS OF WORD DRIVE LINES AND A PLURALITY OF BIT DRIVE LINES, A PLURALITY OF STORAGE ELEMENTS CONNECTED BETWEEN EACH BIT DRIVE LINE AND EACH OF SAID PAIRS OF WORD DRIVE LINES, EACH SAID ELEMENT COMPRISING TWO VARIABLE CAPACITANCE SEMICONDUCTOR DIODES CONNECTED IN FRONT TO BACK RELATIONSHIP BETWEEN THE WORD DRIVE LINES AND A CAPACITOR CONNECTED BETWEEN THE JUNCTION BETWEEN SAID TWO DIODES AND THE BIT DRIVE LINE AND MEANS FOR COINCIDENTLY APPLYING TWO WORD AND A BIT PULSE TO SAID ELEMENTS TO WRITE INTO SAID MATRIX AND MEANS FOR COINCIDENTLY PULSING THE WORD LINES ONLY TO READ OUT OF SAID MATRIX THE PULSES APPLIED TO SAID WORD DRIVE LINES BEING INSUFFICIENT TO CAUSE SAID SEMICONDUCTOR DIODES TO CONDUCT.
Claim 2
Dependent Claim
128 words
A BINARY INFORMATION STORAGE MATRIX COMPRISING A PLURALITY OF PAIRS OF WORD DRIVE LINES AND A PLURALITY OF BIT DRIVE LINES, A PLURALITY OF STORAGE ELEMENTS CONNECTED BETWEEN EACH BIT DRIVE LINE AND EACH OF SAID PAIRS OF WORD DRIVE LINES, EACH SAID ELEMENT COMPRISING TWO VARIABLE CAPACITANCE SEMICONDUCTOR DIODES CONNECTED IN FRONT TO BACK RELATIONSHIP BETWEEN THE WORD DRIVE LINES AND A CAPACITOR CONNECTED BETWEEN THE JUNCTION BETWEEN SAID TWO DIODES AND THE BIT DRIVE LINE AND MEANS FOR COINCIDENTLY APPLYING TWO WORD AND A BIT PULSE TO SAID ELEMENTS TO WRITE INTO SAID MATRIX AND MEANS FOR COINCIDENTLY PULSING THE WORD LINES ONLY TO READ OUT OF SAID MATRIX THE PULSES APPLIED TO SAID WORD DRIVE LINES BEING INSUFFICIENT TO CAUSE SAID SEMICONDUCTOR DIODES TO CONDUCT.
References Cited (Backward Citations)
US2823368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |