US3202964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic memory system
Assignee: International Business Machines Corp
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Filing: 1960-10-25
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Granted: 1965-08-24
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Expires: 1980-10-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold F Heath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:27
CPC Classifications
G; G11; G11C; G11C15/00; G11C15/06; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/831; Y10S505/838; Y10S505/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A COMPARE CIRCUIT COMPRISING A CURRENT SOURCE; FIRST AND SECOND SUPERCONDUCTOR PATHS CONNECTED IN PARALLEL CIRCUIT RELATIONSHIP WITH RESPECT TO SAID CURRENT SOURCE; FIRST, SECOND, THIRD AND FOURTH SUPERCONDUCTOR GATE CONDUCTORS MAINTAINED AT A TEMPREATURE AT WHICH EACH IS NORMALLY SUPERCONDUCTIVE, SAID FIRST AND SECOND GATE CONDUCTOR BEING SERIES CONNECTED IN SAID FIRST PATH; SAID THIRD AND FOURTH GATE CONDUCTORS BEING SERIES CONNECTED IN SAID SECOND PATH; SUPERCONDUCTIVE MEANS CONNECTING A TERMINAL BETWEEN SAID FIRST AND SECOND SERIES CONNECTED GATE CONDUCTORS TO A TERMINAL BETWEEN SAID THIRD AND FOURTH SERIES CONNECTED GATE CONDUCTORS AND REMAINING SUPERCONDUCTIVE THROUGHOUT THE OPERATION OF SAID COMPARE CIRCUIT; MEANS FOR SELECTIVELY DRIVING ONE OR THE OTHER OF SAID FIRST AND THIRD GATE CONDUCTORS RESISTIVE IN ACCORDANCE WITH THE VALUE OF A FIRST BINARY INPUT TO SAID CIRCUIT; AND MEANSD FOR SE-
Claim 2
Dependent Claim
136 words
A COMPARE CIRCUIT COMPRISING A CURRENT SOURCE; FIRST AND SECOND SUPERCONDUCTOR PATHS CONNECTED IN PARALLEL CIRCUIT RELATIONSHIP WITH RESPECT TO SAID CURRENT SOURCE; FIRST, SECOND, THIRD AND FOURTH SUPERCONDUCTOR GATE CONDUCTORS MAINTAINED AT A TEMPREATURE AT WHICH EACH IS NORMALLY SUPERCONDUCTIVE, SAID FIRST AND SECOND GATE CONDUCTOR BEING SERIES CONNECTED IN SAID FIRST PATH; SAID THIRD AND FOURTH GATE CONDUCTORS BEING SERIES CONNECTED IN SAID SECOND PATH; SUPERCONDUCTIVE MEANS CONNECTING A TERMINAL BETWEEN SAID FIRST AND SECOND SERIES CONNECTED GATE CONDUCTORS TO A TERMINAL BETWEEN SAID THIRD AND FOURTH SERIES CONNECTED GATE CONDUCTORS AND REMAINING SUPERCONDUCTIVE THROUGHOUT THE OPERATION OF SAID COMPARE CIRCUIT; MEANS FOR SELECTIVELY DRIVING ONE OR THE OTHER OF SAID FIRST AND THIRD GATE CONDUCTORS RESISTIVE IN ACCORDANCE WITH THE VALUE OF A FIRST BINARY INPUT TO SAID CIRCUIT; AND MEANSD FOR SE-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |