Patent US3328628A successfully refreshed from Google Patents.
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
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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 20:32
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)
US2701322A
Cited
US2767344A
Cited
US2996639A
Cited
US2813990A
Cited
US2853641A
Cited
US2991391A
Cited
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 |