US3553660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film closed flux storage element
Assignee: Ampex Corp
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Filing: 1967-05-25
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Granted: 1971-01-05
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Expires: 1987-05-25
Abstract
Abstract A CLOSED FLUX STORAGE ELEMENT HAVING TWO MAGNETIC THIN FILMS WHICH ARE FULLY CONNECTED TOGETHER ALONG THE ENTIRE THICKNESS OF THEIR LATERAL EDGES WITH MAGNETIC MATERIAL AND HAVING AN ELECTRICAL CONDUCTOR SANDWICHED BETWEEN THE FILMS, THUS PROVIDING AN ELEMENT CROSS SECTION WHICH DEFINES A COMPLETELY CLOSED FLUX STRUCTURE, WHEREIN THE ABSOLUTE CLOSURE OF THE FLUX PATH AS WELL AS THE QUALITY OF THE MAGNETIC THIN FILM DISPOSED ON THE ELECTRICAL CONDUCTOR, IS PRESERVED BY UTILIZING A THIN FILM OF SMOOTHING MATERIAL BETWEEN THE FILM AND CONDUCTOR.
Inventors
- 👤 Irving W Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:27
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/14
Claims Analysis
Total Claims: 0
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |