Patent US3300728A successfully refreshed from Google Patents.
US3300728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quadrupole parametric amplifier with gradual pump transition
Assignee: Zenith Electronics LLC
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Filing: 1963-11-29
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Granted: 1967-01-24
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Adler Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:49
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN ELECTRON BEAM AMPLIFIER COMPRISING: A CATHODE FOR PROJECTING AN ELECTRON BEAM ALONG A PREDETERMINED PATH; MEANS FOR DEVELOPING A MAGNETIC FIELD ALONG SAID PATH AND OF A PREDETERMINED STRENGTH TO ESTABLISH A CONDITION OF CYCLOTRON RESONANCE FOR ELECTRONS IN SAID BEAM; MEANS DISPOSED ALONG SAID PATH FOR COUPLING SIGNAL ENERGY TO SAID BEAM; MEANS DISPOSED ALONG SAID PATH FOR EXTRACTING AMPLIFIED SIGNAL ENERGY FROM SAID BEAM; AND A PUMP STRUCTURE DISPOSED EFFECTIVELY BETWEEN SAID COUPLING AND EXTRACTING MEANS AND WHICH DEVELOPS A PERIODIC INHOMOGENEOUS FIELD TO WHICH THE ELECTRONS ARE SUBJECTED AND WHICH VARIES AT A RATE AT WHICH THE ELECTRONS ENCOUNTER FOUR FIELD REVERSALS FOR EACH ORBIT OF THEIR CYCLOTRON MOTION, THE STRENGTH OF SAID INHOMOGENEOUS FIELD INCREASING GRADUALLY IN THE DIRECTION OF ELECTRON FLOW AT LEAST OVER THE INITIAL, UPSTREAM PORTION OF SAID FIELD.
Claim 2
Dependent Claim
137 words
AN ELECTRON BEAM AMPLIFIER COMPRISING: A CATHODE FOR PROJECTING AN ELECTRON BEAM ALONG A PREDETERMINED PATH; MEANS FOR DEVELOPING A MAGNETIC FIELD ALONG SAID PATH AND OF A PREDETERMINED STRENGTH TO ESTABLISH A CONDITION OF CYCLOTRON RESONANCE FOR ELECTRONS IN SAID BEAM; MEANS DISPOSED ALONG SAID PATH FOR COUPLING SIGNAL ENERGY TO SAID BEAM; MEANS DISPOSED ALONG SAID PATH FOR EXTRACTING AMPLIFIED SIGNAL ENERGY FROM SAID BEAM; AND A PUMP STRUCTURE DISPOSED EFFECTIVELY BETWEEN SAID COUPLING AND EXTRACTING MEANS AND WHICH DEVELOPS A PERIODIC INHOMOGENEOUS FIELD TO WHICH THE ELECTRONS ARE SUBJECTED AND WHICH VARIES AT A RATE AT WHICH THE ELECTRONS ENCOUNTER FOUR FIELD REVERSALS FOR EACH ORBIT OF THEIR CYCLOTRON MOTION, THE STRENGTH OF SAID INHOMOGENEOUS FIELD INCREASING GRADUALLY IN THE DIRECTION OF ELECTRON FLOW AT LEAST OVER THE INITIAL, UPSTREAM PORTION OF SAID FIELD.
References Cited (Backward Citations)
US3122709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |