Patent US3322979A successfully refreshed from Google Patents.
US3322979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermionic energy converter
Assignee: Texas Instruments Inc
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Filing: 1964-03-31
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Granted: 1967-05-30
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 William R Clendinning
- 👤 Foster L Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:16
CPC Classifications
H; H01; H01J; H01J45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A THERMIONIC DIODE COMPRISING (A) AN EMITTER MEMBER COMPRISED OF A LAMINATED BODY HAVING ONE SURFACE OF DENSE, FLUID-IMPERVIOUS SILICON CARBIDE AND A GENERALLY OPPOSITE SURFACE OF AN EMITTESR MATERIAL HAVING A RELATIVELY HIGH WORK FUNCTION, SAID EMITTER MEMBER HAVING A LAYER OF GRAPHITE BETWEEN SAID SILICON CARBIDE AND SAID EMITTER MATERIAL, THE SURFACES OF SAID GRAPHITE LAYER MATING WITH SAID SILICON CARBIDE AND SAID EMITTER MATERIAL, AND A THERMALLY CONDUCTIVE BRAZE MATERIAL BONDING THE MATING SURFACE OF SAID EMITTER MATERIAL WITH THE GRAPHITE, (B) A COLLECTOR MEMBER HAVING A RELATILVELY LOW WORK FUNCTION DISPOSED ADJACENT TO, BUT SAPCED FROM, THE SURFACE OF SAID EMITTER MATERIAL, AND (C) MEANS FOR CONTROLLING THE ATMOSPHERE BETWEEN THE EMITTER MATERIAL AND THE COLLECTOR MEMBER.
Claim 2
Dependent Claim
121 words
A THERMIONIC DIODE COMPRISING (A) AN EMITTER MEMBER COMPRISED OF A LAMINATED BODY HAVING ONE SURFACE OF DENSE, FLUID-IMPERVIOUS SILICON CARBIDE AND A GENERALLY OPPOSITE SURFACE OF AN EMITTESR MATERIAL HAVING A RELATIVELY HIGH WORK FUNCTION, SAID EMITTER MEMBER HAVING A LAYER OF GRAPHITE BETWEEN SAID SILICON CARBIDE AND SAID EMITTER MATERIAL, THE SURFACES OF SAID GRAPHITE LAYER MATING WITH SAID SILICON CARBIDE AND SAID EMITTER MATERIAL, AND A THERMALLY CONDUCTIVE BRAZE MATERIAL BONDING THE MATING SURFACE OF SAID EMITTER MATERIAL WITH THE GRAPHITE, (B) A COLLECTOR MEMBER HAVING A RELATILVELY LOW WORK FUNCTION DISPOSED ADJACENT TO, BUT SAPCED FROM, THE SURFACE OF SAID EMITTER MATERIAL, AND (C) MEANS FOR CONTROLLING THE ATMOSPHERE BETWEEN THE EMITTER MATERIAL AND THE COLLECTOR MEMBER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |