US3131358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unidirectional traveling wave parametric circuits using resonant sections
Assignee: International Business Machines Corp
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Filing: 1961-03-31
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Granted: 1964-04-28
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Schreiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:55
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A TRAVELING WAVE PARAMETRIC CIRCUIT COMPRISING A TRANSMISSION LINE HAVING INPUT AND OUTPUT ENDS FOR TRANSMITTING SIGNAL ENERGY AT A GIVEN FREQUENCY, A PAIR OF RESONANT CIRCUITS EACH HAVING A VARIABLE REACTANCE ELEMENT AND EACH TUNED TO SAID GIVEN FREQUENCY AND COUPLED TO SAID TRANSMISSION LINE BETWEEN SAID ENDS AT SPACED APART POINTS SEPARATED BY A DISTANCE EQUAL TO SUBSTANTIALLY AN ODD MULTIPLE OF 1/8 OF THE LENGTH OF A WAVE OF THE GIVEN FREQUENCY AND MEANS FOR VARYING THE REACTANCE OF SAID VARIABLE REACTANCE ELEMENT AT A FREQUENCY SUBSTANTIALLY TWICE THAT OF SAID GIVEN FREQUENCY BY CONTINUOUSLY EXCITING SAID ELEMENTS BELOW A THRESHOLD POINT AT WHICH OSCILLATIONS AT SAID GIVEN FREQUENCY ARE SUSTAINED IN SAID RESONANT CIRCUITS.
Claim 2
Dependent Claim
118 words
A TRAVELING WAVE PARAMETRIC CIRCUIT COMPRISING A TRANSMISSION LINE HAVING INPUT AND OUTPUT ENDS FOR TRANSMITTING SIGNAL ENERGY AT A GIVEN FREQUENCY, A PAIR OF RESONANT CIRCUITS EACH HAVING A VARIABLE REACTANCE ELEMENT AND EACH TUNED TO SAID GIVEN FREQUENCY AND COUPLED TO SAID TRANSMISSION LINE BETWEEN SAID ENDS AT SPACED APART POINTS SEPARATED BY A DISTANCE EQUAL TO SUBSTANTIALLY AN ODD MULTIPLE OF 1/8 OF THE LENGTH OF A WAVE OF THE GIVEN FREQUENCY AND MEANS FOR VARYING THE REACTANCE OF SAID VARIABLE REACTANCE ELEMENT AT A FREQUENCY SUBSTANTIALLY TWICE THAT OF SAID GIVEN FREQUENCY BY CONTINUOUSLY EXCITING SAID ELEMENTS BELOW A THRESHOLD POINT AT WHICH OSCILLATIONS AT SAID GIVEN FREQUENCY ARE SUSTAINED IN SAID RESONANT CIRCUITS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |