US3258636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron emitter with activator of sill cide, boride or carbide of solid solu- tion of barium and at least one other alkaline earth metal
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:04
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/20; H01J1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A THERMIONIC EMITTER OF A SINGULAR INTEGRAL BODY CONSISTING OF A REFRACTORY MATRIX HAVING DISPERSED THEREIN AN ACTIVATOR COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE SLICIDES, BORIDES, AND CARBIDES OF A SOLID SOLUTION OF (A) BARIUM AND (B) AT LEAST ONE OTHER ALKALINE EARTH METAL, SAID ACTIVATOR COMPOUND COMPRISING APPROXIMATELY 10 WEIGHT PERCENT OF SAID BODY, THE SAID SOLID SOLUTION WITHIN SAID REFRACTORY MATRIX CONSTITUTING THE SOLE SUPPLY OF BARIUM FOR SAID EMITTER DURING EXTENDED OPERATION THEREOF.
Claim 2
Dependent Claim
78 words
A THERMIONIC EMITTER OF A SINGULAR INTEGRAL BODY CONSISTING OF A REFRACTORY MATRIX HAVING DISPERSED THEREIN AN ACTIVATOR COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE SLICIDES, BORIDES, AND CARBIDES OF A SOLID SOLUTION OF (A) BARIUM AND (B) AT LEAST ONE OTHER ALKALINE EARTH METAL, SAID ACTIVATOR COMPOUND COMPRISING APPROXIMATELY 10 WEIGHT PERCENT OF SAID BODY, THE SAID SOLID SOLUTION WITHIN SAID REFRACTORY MATRIX CONSTITUTING THE SOLE SUPPLY OF BARIUM FOR SAID EMITTER DURING EXTENDED OPERATION THEREOF.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |