Patent US3320554A successfully refreshed from Google Patents.
US3320554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical film ferromagnetic resonance devices
Assignee: Individual
•
Filing: 1964-12-03
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Granted: 1967-05-16
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Expires: 1984-12-03
Abstract
No abstract record available.
Inventors
- 👤 Harry H Wieder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:39
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A COAXIAL FERROMAGNETIC RESONANCE DEVICE COMPRISING: (A) A CYLINDRICAL INNER CONDUCTOR, (B) A THIN-FILM OF FERROMAGNETIC MATERIAL ON THE CYLINDRICAL SURFACE OF SAID INNER CONDUCTOR, (C) AN OUTER CONDUCTOR COAXIAL WITH SAID INNER CONDUCTOR AND SPACED THEREFROM FORMING A COAXIAL CAVITY THEREBETWEEN, (D) INPUT AND OUTPUT CONNECTOR MEANS TO SAID INNER AND OUTER CONDUCTORS, (E) A UNIFORM APPLIED MAGNETIC FIELD GENERATED FROM AN EXTERNAL SOURCE BEING APPLIED IN A DIRECTION PERPENDICULAR TO THE LONGITUDIANL CYLINDRICAL AXIS OF THE COAXIAL CONDUCTORS AND HAVING A MAGNITUDE SUFFICIENT TO EXCITE FERROMAGNETIC RESONANCE IN SAID FERROMAGNETIC THIN-FILM ON THE SURFACE OF SAID CYLINDRICAL INNER CONDUCTOR, AND CONSEQUENTLY HAVING A LARGE ABSORPTION OF RF ENERGY CORRESPONDING TO THE FERROMAGNETIC RESONANCE FREQUENCY.
Claim 2
Dependent Claim
116 words
A COAXIAL FERROMAGNETIC RESONANCE DEVICE COMPRISING: (A) A CYLINDRICAL INNER CONDUCTOR, (B) A THIN-FILM OF FERROMAGNETIC MATERIAL ON THE CYLINDRICAL SURFACE OF SAID INNER CONDUCTOR, (C) AN OUTER CONDUCTOR COAXIAL WITH SAID INNER CONDUCTOR AND SPACED THEREFROM FORMING A COAXIAL CAVITY THEREBETWEEN, (D) INPUT AND OUTPUT CONNECTOR MEANS TO SAID INNER AND OUTER CONDUCTORS, (E) A UNIFORM APPLIED MAGNETIC FIELD GENERATED FROM AN EXTERNAL SOURCE BEING APPLIED IN A DIRECTION PERPENDICULAR TO THE LONGITUDIANL CYLINDRICAL AXIS OF THE COAXIAL CONDUCTORS AND HAVING A MAGNITUDE SUFFICIENT TO EXCITE FERROMAGNETIC RESONANCE IN SAID FERROMAGNETIC THIN-FILM ON THE SURFACE OF SAID CYLINDRICAL INNER CONDUCTOR, AND CONSEQUENTLY HAVING A LARGE ABSORPTION OF RF ENERGY CORRESPONDING TO THE FERROMAGNETIC RESONANCE FREQUENCY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |