US3093801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling wave parametric amplifiers
Assignee: International Business Machines Corp
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Filing: 1960-12-27
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Granted: 1963-06-11
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 George F Bland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN AMPLIFIER COMPRISING FIRST AND SECOND TRANSMISSION LINES, MEANS FOR APPLYING A SIGNAL VOLTAGE HAVING A FIRST FREQUENCY TO SAID FIRST LINE, MEANS FOR APPLYING TO SAID SECOND LINE A PUMP VOLTAGE HAVING A SECOND FREQUENCY HIGHER THAN SAID SECOND FREQUENCY, A VARIABLE REACTANCE INTER-COUPLING SAID LINES BETWEEN A GIVEN POINT ON EACH OF SAID LINES, FIRST IMPEDANCE MEANS COUPLED TO THE GIVEN POINT OF SAID FIRST LINE HAVING AT THE GIVEN POINT OF SAID FIRST LINE A SUBSTANTIALLY INFINITE IMPEDANCE VALUE FOR SAID SIGNAL VOLTAGE AND A SUBSTANTIALLY ZERO IMPEDANCE VALUE FOR SAID PUMP VOLTAGE AND SECOND IMPEDANCE MEANS COUPLED TO THE GIVEN POINT OF SAID SECOND LINE HAVING AT
Claim 2
Dependent Claim
111 words
AN AMPLIFIER COMPRISING FIRST AND SECOND TRANSMISSION LINES, MEANS FOR APPLYING A SIGNAL VOLTAGE HAVING A FIRST FREQUENCY TO SAID FIRST LINE, MEANS FOR APPLYING TO SAID SECOND LINE A PUMP VOLTAGE HAVING A SECOND FREQUENCY HIGHER THAN SAID SECOND FREQUENCY, A VARIABLE REACTANCE INTER-COUPLING SAID LINES BETWEEN A GIVEN POINT ON EACH OF SAID LINES, FIRST IMPEDANCE MEANS COUPLED TO THE GIVEN POINT OF SAID FIRST LINE HAVING AT THE GIVEN POINT OF SAID FIRST LINE A SUBSTANTIALLY INFINITE IMPEDANCE VALUE FOR SAID SIGNAL VOLTAGE AND A SUBSTANTIALLY ZERO IMPEDANCE VALUE FOR SAID PUMP VOLTAGE AND SECOND IMPEDANCE MEANS COUPLED TO THE GIVEN POINT OF SAID SECOND LINE HAVING AT
References Cited (Backward Citations)
US3012203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |