US3244993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronically adjustable spin-wave delay line and parametric amplifier
Assignee: Raytheon Co
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Filing: 1962-02-06
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Granted: 1966-04-05
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Expires: 1982-02-06
Abstract
No abstract record available.
Inventors
- 👤 Ernst F R A Schloemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:59
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/02; H03H; H03H9/00; H03H9/30; H03H9/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN COMBINATION: A NON-ELLIPSOIDAL BODY OF GYROMAGNETIC MATERIAL WITH THE DIMENSION ALONG ITS LONGITUDINAL AXIS EXCEEDING THE DIMENSION TRANSVERSE TO SAID AXIS; MEANS FOR APPLYING AN EXCITING MAGNETIC FIELD OF AN INPUT MICROWAVE FREQUENCY SIGNAL AND A UNIFORM EXTERNAL D.-C. BIASING MAGNETIC FIELD TO AT LEAST A FIRST PORTION OF SAID BODY; SAID EXCITING AND BIASING MAGNETIC FIELDS HAVING A MAGNITUDE REQUIRED TO PRODUCE MAGNETIC RESONANT OSCILLATIONS IN THE SPIN WAVE MODE OF PROPAGATION IN SAID FIRST PORTION; MEANS FOR EFFECTING THE TRANSMISSION OF SAID OSCILLATIONS TO A SECOND PORTION OF SAID BODY;
Claim 2
Dependent Claim
93 words
IN COMBINATION: A NON-ELLIPSOIDAL BODY OF GYROMAGNETIC MATERIAL WITH THE DIMENSION ALONG ITS LONGITUDINAL AXIS EXCEEDING THE DIMENSION TRANSVERSE TO SAID AXIS; MEANS FOR APPLYING AN EXCITING MAGNETIC FIELD OF AN INPUT MICROWAVE FREQUENCY SIGNAL AND A UNIFORM EXTERNAL D.-C. BIASING MAGNETIC FIELD TO AT LEAST A FIRST PORTION OF SAID BODY; SAID EXCITING AND BIASING MAGNETIC FIELDS HAVING A MAGNITUDE REQUIRED TO PRODUCE MAGNETIC RESONANT OSCILLATIONS IN THE SPIN WAVE MODE OF PROPAGATION IN SAID FIRST PORTION; MEANS FOR EFFECTING THE TRANSMISSION OF SAID OSCILLATIONS TO A SECOND PORTION OF SAID BODY;
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |