US3328628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube employing a relatively long electron beam and getter material disposedat the collector
Assignee: NEC Corp
•
Filing: 1962-10-05
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Granted: 1967-06-27
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Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Yasuda Susumu
- 👤 Tsuchiya Saburo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:07
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/027; H01J7/00; H01J7/14; H01J7/18; H01J7/186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN IMPROVED ELECTRON TUBE OF THE TYPE IN WHICH AN ELECTRON BEAM EMITTED BY A CATHODE ELECTRODE TRAVERSE A LONG BEAM PATH WITHIN AN EVACUATED ENVELOPE TO A COLLECTOR ELECTRODE, THE COLLISION OF ELECTRONS OF SAID BEAM WITH THE RESIDUAL GAS IN SAID ENVELOPE PRODUCING POSITIVE IONS DURING THE OPERATION OF SAID TUBE AND WHEREIN A HIGH FREQUENCY CIRCUIT IS ELECTROMAGNETICALLY COUPLED TO SAID BEAM FOR THE INTERCHANGE OF ENERGY THEREWITH, THE IMPROVEMENT COMPRISING: MEANS FOR ENERGIZING SAID COLLECTOR ELECTRODE WITHA POTENTIAL WHICH IS LOWER THAN THAT OF SAID HIGH FREQUENCY CIRCUIT THEREBY TO PRODUCE A POTENTIAL GRADIENT WHICH WILL CAUSE THE POSITIVE IONS TO BE ATTRACTED TO SAID COLLECTOR ELECTRODE
Claim 2
Dependent Claim
111 words
AN IMPROVED ELECTRON TUBE OF THE TYPE IN WHICH AN ELECTRON BEAM EMITTED BY A CATHODE ELECTRODE TRAVERSE A LONG BEAM PATH WITHIN AN EVACUATED ENVELOPE TO A COLLECTOR ELECTRODE, THE COLLISION OF ELECTRONS OF SAID BEAM WITH THE RESIDUAL GAS IN SAID ENVELOPE PRODUCING POSITIVE IONS DURING THE OPERATION OF SAID TUBE AND WHEREIN A HIGH FREQUENCY CIRCUIT IS ELECTROMAGNETICALLY COUPLED TO SAID BEAM FOR THE INTERCHANGE OF ENERGY THEREWITH, THE IMPROVEMENT COMPRISING: MEANS FOR ENERGIZING SAID COLLECTOR ELECTRODE WITHA POTENTIAL WHICH IS LOWER THAN THAT OF SAID HIGH FREQUENCY CIRCUIT THEREBY TO PRODUCE A POTENTIAL GRADIENT WHICH WILL CAUSE THE POSITIVE IONS TO BE ATTRACTED TO SAID COLLECTOR ELECTRODE
References Cited (Backward Citations)
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Cited
US2767344A
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US2996639A
Cited
US2813990A
Cited
US2853641A
Cited
US2991391A
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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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |