US3090925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parametric amplifier
Assignee: Zenith Electronics LLC
•
Filing: 1958-09-17
•
Granted: 1963-05-21
•
Expires: 1978-09-17
Abstract
No abstract record available.
Inventors
- 👤 Adler Robert
- 👤 Wade Glen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
APPARATUS FOR PARAMETRICALLY AMPLIFYING SIGNAL ENERGY WHICH COMPRISES: MEANS FOR PROJECTING AN ELECTRON BEAM ALONG A PREDETERMINED PATH; MEANS FOR DEVELOPING ON SAID BEAM A SPACE-CHARGE WAVE CORRESPONDING TO INPUT-SIGNAL ENERGY AT A PREDETERMINED FREQUENCY; MEANS FOR PROPAGATING A DRIVING-SIGNAL WAVE EXTERNALLY OF AND ALONGSIDE SAID BEAM PATH AT A FREQUENCY DIFFERENT FROM SAID PREDETERMINED FREQUENCY AND HAVING A PROPAGATION CONSTANT FOR SAID DRIVING-SIGNAL WAVE TO DELIVER ENERGY FROM SAID DRIVING-SIGNAL WAVE TO SAID SPACE-CHARGE WAVE WITH SAID PROPAGATION CONSTANT BEING SUBSTANTIALLY DIFFERENT FROM THE PROPAGATION CONSTANT OF ANY SPACE-CHARGE IN WAVE PRODUCED ON THE BEAM CORRESPONDING TO SAID DRIVING-SIGNAL FREQUENCY; AND MEANS FOR EXTRACTING AMPLIFIED SIGNAL ENERGY FROM SAID BEAM.
Claim 2
Dependent Claim
111 words
APPARATUS FOR PARAMETRICALLY AMPLIFYING SIGNAL ENERGY WHICH COMPRISES: MEANS FOR PROJECTING AN ELECTRON BEAM ALONG A PREDETERMINED PATH; MEANS FOR DEVELOPING ON SAID BEAM A SPACE-CHARGE WAVE CORRESPONDING TO INPUT-SIGNAL ENERGY AT A PREDETERMINED FREQUENCY; MEANS FOR PROPAGATING A DRIVING-SIGNAL WAVE EXTERNALLY OF AND ALONGSIDE SAID BEAM PATH AT A FREQUENCY DIFFERENT FROM SAID PREDETERMINED FREQUENCY AND HAVING A PROPAGATION CONSTANT FOR SAID DRIVING-SIGNAL WAVE TO DELIVER ENERGY FROM SAID DRIVING-SIGNAL WAVE TO SAID SPACE-CHARGE WAVE WITH SAID PROPAGATION CONSTANT BEING SUBSTANTIALLY DIFFERENT FROM THE PROPAGATION CONSTANT OF ANY SPACE-CHARGE IN WAVE PRODUCED ON THE BEAM CORRESPONDING TO SAID DRIVING-SIGNAL FREQUENCY; AND MEANS FOR EXTRACTING AMPLIFIED SIGNAL ENERGY FROM SAID BEAM.
References Cited (Backward Citations)
US2245670A
Cited
US2616990A
Cited
US2584308A
Cited
US2860280A
Cited
US2972081A
Cited
US2974252A
Cited
US3009078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |