Patent US3184633A successfully refreshed from Google Patents.
US3184633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductive electron multiplier
Assignee: General Electric Co
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Filing: 1960-11-03
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Granted: 1965-05-18
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Expires: 1980-11-03
Abstract
No abstract record available.
Inventors
- 👤 Frederick A White
- 👤 William D Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:51
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN AN ELECTRON MULTIPLIER HAVING TWO SPACED PARALLEL ELECTRODE, MEANS FOR ESTABLISHING A BIASING FIELD BETWEEN SAID ELECTRODES, MEANS FOR ESTABLISHING A LONGITUDINAL POTENTIAL GRADIENT ALONG EACH OF SAID ELECTRODES WHEREBY EACH OF SAID ELECTRODES HAS A RELATIVE POSITIVE POTENTIAL AND A RELATIVE NEGATIVE POTENTIAL END, MEANS FOR ESTABLISHING A MAGNETIC FIELD TRANSVERSE TO SAID BIASING FIELD AND SAID LONGITUDIANL POTENTIAL GRADIENT, MEANS FOR CUASING AN ELECTRON EMISSION AT THE RELATIVE NEGATIVE POTENTIAL END OF ONE OF SAID ELECTRODES, AND AN ELECTRON COLLECTOR ADJACENT THE RELATIVE POSITIVE POTENTIAL END OF SAID ELECTRODES, THE IMPROVEMENT WHEREIN AT LEAST SAID ONE OF SAID ELECTRODES CONSISTS ENTIRELY OF A SELF-SUPPORTING SLAB OF HOMOGENEOUS SEMICONDUCTOR MATERIAL HAVING A LENGTH OF ABOUT TWO CENTIMETERS AND A RESISTIVITY OF THE ORDER OF 109 OHM CENTIMETERS AT A TEMPERATURE OF ABOUT -80* C., AND SAID ELECTRODES HAVE A SPACING OF ABOUT ONE MILLIMETER.
Claim 2
Dependent Claim
146 words
IN AN ELECTRON MULTIPLIER HAVING TWO SPACED PARALLEL ELECTRODE, MEANS FOR ESTABLISHING A BIASING FIELD BETWEEN SAID ELECTRODES, MEANS FOR ESTABLISHING A LONGITUDINAL POTENTIAL GRADIENT ALONG EACH OF SAID ELECTRODES WHEREBY EACH OF SAID ELECTRODES HAS A RELATIVE POSITIVE POTENTIAL AND A RELATIVE NEGATIVE POTENTIAL END, MEANS FOR ESTABLISHING A MAGNETIC FIELD TRANSVERSE TO SAID BIASING FIELD AND SAID LONGITUDIANL POTENTIAL GRADIENT, MEANS FOR CUASING AN ELECTRON EMISSION AT THE RELATIVE NEGATIVE POTENTIAL END OF ONE OF SAID ELECTRODES, AND AN ELECTRON COLLECTOR ADJACENT THE RELATIVE POSITIVE POTENTIAL END OF SAID ELECTRODES, THE IMPROVEMENT WHEREIN AT LEAST SAID ONE OF SAID ELECTRODES CONSISTS ENTIRELY OF A SELF-SUPPORTING SLAB OF HOMOGENEOUS SEMICONDUCTOR MATERIAL HAVING A LENGTH OF ABOUT TWO CENTIMETERS AND A RESISTIVITY OF THE ORDER OF 109 OHM CENTIMETERS AT A TEMPERATURE OF ABOUT -80* C., AND SAID ELECTRODES HAVE A SPACING OF ABOUT ONE MILLIMETER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |