US2871196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodes and emissive material therefor
Assignee: General Electric Co
•
Filing: 1957-04-29
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Granted: 1959-01-27
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Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Dimitrios M Speros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:27
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/06; H01J61/067; H01J61/0675; H01J61/0677; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
26 words
ACTIVATED EMISSIVE MATERIAL FOR A DISCHARGE CATHODE CORRESPONDING TO THE FORMULA (XBAO.AL2O3). YBA WHEREIN X IS BETWEEN 0.1 AND 1 AND IS BETWEEN 0.5X AND 2.6X.
References Cited (Backward Citations)
US1934830A
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US1921066A
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US1946603A
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US2085605A
Cited
US2142331A
Cited
US2300959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |