US3263220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trapped-flux memory
Assignee: International Business Machines Corp
•
Filing: 1956-10-15
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Granted: 1966-07-26
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Expires: 1976-10-15
Abstract
No abstract record available.
Inventors
- 👤 James W Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:46
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/44; H; H10; H10N; H10N60/00; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/831; Y10S505/833
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A STORAGE CELL INCLUDING A BODY COMPRISING A FILM OF MATERIAL IN THE SUPERCONDUCTIVE STATE HAVING AN APERTURE THEREIN, A NARROW MEMBER OF MATERIAL IN THE SUPERCONDUCTIVE STATE MOUNTED OVER THE APERTURE IN ABUTTING RELATIONSHIP WITH SAID MATERIAL, DRIVE MEANS ASSOCIATED WITH SAID NARROW MEMBER FOR INDUCING THEREIN A FIRST PERSISTENT CURRENT HAVING MAGNITUDE AND DIRECTION IN RESPONSE TO A FIRST OPERATING CONDITION OF SAID DRIVE MEANS AND A SECOND PERSISTENT CURRENT HAVING MAGNITUDE AND DIRECTION IN RESPONSE TO A SECOND OPERATING CONDITION OF SAID DRIVE MEANS, SAID FIRST PERSISTENT CURRENT DIFFERING FROM SAID SECOND PERSISTENT CURRENT, AND MEANS ASSOCIATED WITH SAID NARROW MEMBER FOR DETECTING A CHANGE FROM SAID FIRST TO SAID SECOND PERSISTENT CURRENT.
Claim 2
Dependent Claim
116 words
A STORAGE CELL INCLUDING A BODY COMPRISING A FILM OF MATERIAL IN THE SUPERCONDUCTIVE STATE HAVING AN APERTURE THEREIN, A NARROW MEMBER OF MATERIAL IN THE SUPERCONDUCTIVE STATE MOUNTED OVER THE APERTURE IN ABUTTING RELATIONSHIP WITH SAID MATERIAL, DRIVE MEANS ASSOCIATED WITH SAID NARROW MEMBER FOR INDUCING THEREIN A FIRST PERSISTENT CURRENT HAVING MAGNITUDE AND DIRECTION IN RESPONSE TO A FIRST OPERATING CONDITION OF SAID DRIVE MEANS AND A SECOND PERSISTENT CURRENT HAVING MAGNITUDE AND DIRECTION IN RESPONSE TO A SECOND OPERATING CONDITION OF SAID DRIVE MEANS, SAID FIRST PERSISTENT CURRENT DIFFERING FROM SAID SECOND PERSISTENT CURRENT, AND MEANS ASSOCIATED WITH SAID NARROW MEMBER FOR DETECTING A CHANGE FROM SAID FIRST TO SAID SECOND PERSISTENT CURRENT.
References Cited (Backward Citations)
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Cited
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US2691154A
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US2832897A
Cited
US2913881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |