Patent US3231835A successfully refreshed from Google Patents.
US3231835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High power microwave components
Assignee: Airtron Inc
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Filing: 1961-12-13
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Granted: 1966-01-25
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Expires: 1981-12-13
Abstract
No abstract record available.
Inventors
- 👤 James W Nielsen
- 👤 Joel E Zneimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:28
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
IN COMBINATION: A CONDUCTIVELY BOUNDED WAVEGUIDING STRUCTURE; AND A FERRITE ELEMENT LOCATED IN SAID WAVEGUIDING STRUCTURE, SAID FERRITE HAVING A COMPOSITION CORRESPONDING TO THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
26 words
IN COMBINATION: A CONDUCTIVELY BOUNDED WAVEGUIDING STRUCTURE; AND A FERRITE ELEMENT LOCATED IN SAID WAVEGUIDING STRUCTURE, SAID FERRITE HAVING A COMPOSITION CORRESPONDING TO THE FOLLOWING FORMULA:
References Cited (Backward Citations)
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Cited
US2958055A
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US2975383A
Cited
US3048913A
Cited
US3042999A
Cited
US3063024A
Cited
US3011137A
Cited
US3070760A
Cited
US3085212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |