Patent US3197718A successfully refreshed from Google Patents.
US3197718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyromagnetic resonance waveguide isolator with ferrite strips and overlapping ferrite bar
Assignee: International Standard Electric Corp
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Filing: 1962-08-08
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Granted: 1965-07-27
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Expires: 1982-08-08
Abstract
No abstract record available.
Inventors
- 👤 Sigrist Viktor
- 👤 Muiler Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:30
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/36; H01P1/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A WAVEGUIDE ISOLATOR USING GYROMAGNETIC RESONANCE TO OBTAIN ISOLATION COMPRISING WAVEGUIDE MEANS OF RECTANGULAR CROSS SECTION, MEANS ASSOCIATED WITH SAID WAVEGUIDE MEANS FOR GENERATING A STATIC MAGNETIC FIELD, A PLURALITY OF FERRITE STRIPS ARRANGED SYMMETRICALLY IN BROAD SIDE WALLS OF SAID WAVEGUIDE AT FIXED DISTANCES FROM THE NARROW SIDE WALLS OF SAID WAVEGUIDE TO REDUCE THE RELUCTANCE OF SAID WAVEGUIDE TO SAID STATIC MAGNETIC FIELD, A FERRITE BAR MOUNTED PARALLEL TO SAID WAVEGUIDE AXIS BETWEEN TWO OF SAID STRIPES ON AT LEAST ONE OF THE BROAD SIDE WALLS OF SAID WAVEGUIDE, SAID FERRITE BAR BEING OF SUFFICIENT WIDTH TO OVERLAP SAID FERRITE STRIPES ON EACH SIDE OF SAID FERRITE BAR.
Claim 2
Dependent Claim
110 words
A WAVEGUIDE ISOLATOR USING GYROMAGNETIC RESONANCE TO OBTAIN ISOLATION COMPRISING WAVEGUIDE MEANS OF RECTANGULAR CROSS SECTION, MEANS ASSOCIATED WITH SAID WAVEGUIDE MEANS FOR GENERATING A STATIC MAGNETIC FIELD, A PLURALITY OF FERRITE STRIPS ARRANGED SYMMETRICALLY IN BROAD SIDE WALLS OF SAID WAVEGUIDE AT FIXED DISTANCES FROM THE NARROW SIDE WALLS OF SAID WAVEGUIDE TO REDUCE THE RELUCTANCE OF SAID WAVEGUIDE TO SAID STATIC MAGNETIC FIELD, A FERRITE BAR MOUNTED PARALLEL TO SAID WAVEGUIDE AXIS BETWEEN TWO OF SAID STRIPES ON AT LEAST ONE OF THE BROAD SIDE WALLS OF SAID WAVEGUIDE, SAID FERRITE BAR BEING OF SUFFICIENT WIDTH TO OVERLAP SAID FERRITE STRIPES ON EACH SIDE OF SAID FERRITE BAR.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |