US3229172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state electrical circuit component
Assignee: International Business Machines Corp
•
Filing: 1961-02-02
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Granted: 1966-01-11
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Expires: 1981-02-02
Abstract
No abstract record available.
Inventors
- 👤 O Esaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:21
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/44; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H03; H03K; H03K17/00; H03K17/51; H03K17/92; H10; H10N; H10N60/00; H10N60/10; H10N60/11; H10N70/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN ELECTRICAL CIRCUIT COMPONENT COMPRISING A FIRST CONDUCTIVE MEMBER AND A SECOND MEMBER FORMED OF FERROMAGNETIC MATERIAL AND HAVING A MAGNETIC STATE, SAID MEMBERS BEING SEPARATED BY A THIN INSULATING BARRIER, SAID INSULATING BARRIER BEING OF A THICKNESS IN THE ORDER OF 20 A. TO 30 A. TO SUPPORT CONDUCTION BY ELECTRON TUNNELING WHEN BIAS IS APPLIED BETWEEN SAID MEMBERS, AND MEANS FOR APPLYING SAID BIAS BETWEEN SAID MEMBERS.
Claim 2
Dependent Claim
69 words
AN ELECTRICAL CIRCUIT COMPONENT COMPRISING A FIRST CONDUCTIVE MEMBER AND A SECOND MEMBER FORMED OF FERROMAGNETIC MATERIAL AND HAVING A MAGNETIC STATE, SAID MEMBERS BEING SEPARATED BY A THIN INSULATING BARRIER, SAID INSULATING BARRIER BEING OF A THICKNESS IN THE ORDER OF 20 A. TO 30 A. TO SUPPORT CONDUCTION BY ELECTRON TUNNELING WHEN BIAS IS APPLIED BETWEEN SAID MEMBERS, AND MEANS FOR APPLYING SAID BIAS BETWEEN SAID MEMBERS.
References Cited (Backward Citations)
US2221596A
Cited
US2180159A
Cited
US2791758A
Cited
US3056073A
Cited
US3024140A
Cited
US3116427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |