US3333140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermionic device
Assignee: Texas Instruments Inc
•
Filing: 1963-07-29
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Granted: 1967-07-25
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Richard A Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:38
CPC Classifications
H; H01; H01J; H01J45/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944; Y10T428/2949
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A COLLECTOR ELECTRODE FOR A THERMIONIC ENERGY CONVERTER COMPRISING A METAL SUBSTRATE, ANINTIMATE INSULATING LAYER ON THE OUTER SURFACE OF SAID SUBSTRATE, SAID LAYER HAVING A THICKNESS LESS THAN A DEBYE LENGTH FOR SAID MATERIAL AND HAVING IN INTIMATE CONTACE WITH THE SURFACE OF SAID INSULATING LAYER AT LEAST A MONOLAYER OF AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF CESIUM, RUBIDIUM POTASSIUM, SODIUM AND LITHIUM.
Claim 2
Dependent Claim
67 words
A COLLECTOR ELECTRODE FOR A THERMIONIC ENERGY CONVERTER COMPRISING A METAL SUBSTRATE, ANINTIMATE INSULATING LAYER ON THE OUTER SURFACE OF SAID SUBSTRATE, SAID LAYER HAVING A THICKNESS LESS THAN A DEBYE LENGTH FOR SAID MATERIAL AND HAVING IN INTIMATE CONTACE WITH THE SURFACE OF SAID INSULATING LAYER AT LEAST A MONOLAYER OF AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF CESIUM, RUBIDIUM POTASSIUM, SODIUM AND LITHIUM.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |