Patent US3226659A successfully refreshed from Google Patents.
US3226659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrimagnetic circulator for microwaves
Assignee: Marelli Lenkurt SpA
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Filing: 1962-07-25
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Granted: 1965-12-28
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Expires: 1982-07-25
Abstract
No abstract record available.
Inventors
- 👤 Giovanni B Stracca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:00
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38; H01P1/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A NON-RECIPROCAL ELECTROMAGNETIC WAVE TRANSMISSION LINE JUNCTION COMPRISING: AT LEAST THREE TRANSMISSIONS LINES, EACH HAVING INNER AND OUTER CONDUCTING ELEMENTS, AN ELONGATED MEMBER OF FERRIMAGNETIC MATERIAL HAVING A LONGITUDINAL AXIS DEFINING THE AXIS OF SAID JUNCTION, AT LEAST THREE CONDUCTORS OF EQUAL LENGTH, EACH HAVING A FIRST AND A SECOND END, SAID CONDUCTORS ARRANGED SYMMETRICALLY ABOUT SAID LONGITUDINAL AXIS, PARRALLEL AND ADJACENT TO SAID FERIMAGNETIC MATERIAL, AND ELECTROMAGNETICALLY COUPLED SUBSTANTIALLY THROUGHOUT THEIR LENGTH, EACH OF SAID CONDUCTORS'' FIRST ENDS CONNECTED TO THE INNER CONDUCTING ELEMENT OF THE CORRESPONDING TRANSMISSION LINE, A CONDUCTING SHIELD SURROUNDING SAID CONDUCTORS AND
Claim 2
Dependent Claim
97 words
A NON-RECIPROCAL ELECTROMAGNETIC WAVE TRANSMISSION LINE JUNCTION COMPRISING: AT LEAST THREE TRANSMISSIONS LINES, EACH HAVING INNER AND OUTER CONDUCTING ELEMENTS, AN ELONGATED MEMBER OF FERRIMAGNETIC MATERIAL HAVING A LONGITUDINAL AXIS DEFINING THE AXIS OF SAID JUNCTION, AT LEAST THREE CONDUCTORS OF EQUAL LENGTH, EACH HAVING A FIRST AND A SECOND END, SAID CONDUCTORS ARRANGED SYMMETRICALLY ABOUT SAID LONGITUDINAL AXIS, PARRALLEL AND ADJACENT TO SAID FERIMAGNETIC MATERIAL, AND ELECTROMAGNETICALLY COUPLED SUBSTANTIALLY THROUGHOUT THEIR LENGTH, EACH OF SAID CONDUCTORS'' FIRST ENDS CONNECTED TO THE INNER CONDUCTING ELEMENT OF THE CORRESPONDING TRANSMISSION LINE, A CONDUCTING SHIELD SURROUNDING SAID CONDUCTORS AND
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |