US3098168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot electron cold lattice semiconductor cathode
Assignee: Thales SA
•
Filing: 1959-03-20
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Granted: 1963-07-16
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Expires: 1979-03-20
Abstract
No abstract record available.
Inventors
- 👤 Aigrain Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:32
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/30; H01J1/308
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A COLD CATHODE STRUCTURE COMPRISING AN EMISSIVE BODY HAVING A SINGLE ZONE OF ONE CONDUCTIVITY TYPE IMPURITY CONTAINING SEMICONDUCTOR MATERIAL HAVING AN EXPOSED EMISSIVE SURFACE, SAID COLD CATHODE STRUCTURE FURTHER COMPRISING MEANS FOR CREATING AN ELECTRIC FIELD WITHIN SAID MATERIAL FOR CAUSING IT TO EMIT ELECTRONS FROM SAID EXPOSED SURFACE.
Claim 2
Dependent Claim
50 words
A COLD CATHODE STRUCTURE COMPRISING AN EMISSIVE BODY HAVING A SINGLE ZONE OF ONE CONDUCTIVITY TYPE IMPURITY CONTAINING SEMICONDUCTOR MATERIAL HAVING AN EXPOSED EMISSIVE SURFACE, SAID COLD CATHODE STRUCTURE FURTHER COMPRISING MEANS FOR CREATING AN ELECTRIC FIELD WITHIN SAID MATERIAL FOR CAUSING IT TO EMIT ELECTRONS FROM SAID EXPOSED SURFACE.
References Cited (Backward Citations)
US2960659A
Cited
US2842706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |