Patent US3286201A successfully refreshed from Google Patents.
US3286201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrite circulator having three mutually coupled coils coupled to the ferrite material
Assignee: Melabs
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Filing: 1966-04-29
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Granted: 1966-11-15
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Expires: 1986-04-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Roy W Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:53
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38; H01P1/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A CIRCULATOR DEVICE OF THE CHARACTER DESCRIBED COMPRISING A JUNCTION OF AT LEAST THREE TRANSMISSION LINES, MUTUALLY COUPLED COILS INTERSECTING AT SUBSTANTIALLY EQUAL ANGLES ELECTRICALLY CONNECTED TO SAID TRANSMISSION LINES AT SAID JUNCTION, FERRITE MATERIAL COUPLED TO SAID COILS, AND MEANS FOR APPLYING A MAGNETIC FIELD TO SAID FERRITE MATERIAL.
Claim 2
Dependent Claim
50 words
A CIRCULATOR DEVICE OF THE CHARACTER DESCRIBED COMPRISING A JUNCTION OF AT LEAST THREE TRANSMISSION LINES, MUTUALLY COUPLED COILS INTERSECTING AT SUBSTANTIALLY EQUAL ANGLES ELECTRICALLY CONNECTED TO SAID TRANSMISSION LINES AT SAID JUNCTION, FERRITE MATERIAL COUPLED TO SAID COILS, AND MEANS FOR APPLYING A MAGNETIC FIELD TO SAID FERRITE MATERIAL.
References Cited (Backward Citations)
US3038133A
Cited
US3165711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |