US3259782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron-emissive structure
Assignee: Thales SA
•
Filing: 1962-10-25
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Granted: 1966-07-05
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Expires: 1982-10-25
Abstract
No abstract record available.
Inventors
- 👤 Arvind M Shroff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:40
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/022; H01J9/025; H01J1/00; H01J1/02; H01J1/30; H01J1/304; H01J3/00; H01J3/02; H01J3/021; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/292; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A POINT-LIKE CATHODE EMITTER, COMPRISING AN POINTSHAPED TUNGSTEN SUPPORT, AND A THIN LAYER OF A ZIRCONIUM CARBIDE COATING ON SAID POINT-SHAPED SUPPORT.
Claim 2
Dependent Claim
22 words
A POINT-LIKE CATHODE EMITTER, COMPRISING AN POINTSHAPED TUNGSTEN SUPPORT, AND A THIN LAYER OF A ZIRCONIUM CARBIDE COATING ON SAID POINT-SHAPED SUPPORT.
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |