US3247470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic film device useful as a modulator
Assignee: Iowa State University Research Foundation Inc
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Filing: 1961-01-23
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Granted: 1966-04-19
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Alvin A Read
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/08; H03C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A MODULATOR ELEMENT, COMPRISING A SINGLE DOMAIN FERROMAGNETIC FILM, A PAIR OF WINDINGS ORTHOGONALLY ARRANGED ON SAID FILM, ONE OF SAID WINDINGS BEING COUPLED TO MEANS FOR INTRODUCING A CARRIER FREQUENCY SIGNAL, THE OTHER OF SAID WINDINGS BEING COUPLED TO MEANS FOR RECEIVING A MODULATED CARRIER SIGNAL, AND MEANS FOR IMPRESSING A MODULATING SIGNAL ON SAID OTHER WINDING, THE AXIS OF SAID CARRIER FREQUENCY WINDING BEING PARALLEL WITH THE REST DIRECTION OF SAID FILM.
Claim 2
Dependent Claim
74 words
A MODULATOR ELEMENT, COMPRISING A SINGLE DOMAIN FERROMAGNETIC FILM, A PAIR OF WINDINGS ORTHOGONALLY ARRANGED ON SAID FILM, ONE OF SAID WINDINGS BEING COUPLED TO MEANS FOR INTRODUCING A CARRIER FREQUENCY SIGNAL, THE OTHER OF SAID WINDINGS BEING COUPLED TO MEANS FOR RECEIVING A MODULATED CARRIER SIGNAL, AND MEANS FOR IMPRESSING A MODULATING SIGNAL ON SAID OTHER WINDING, THE AXIS OF SAID CARRIER FREQUENCY WINDING BEING PARALLEL WITH THE REST DIRECTION OF SAID FILM.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |