US2846339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming an electron emitting body
Assignee: Honeywell Inc
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Filing: 1953-10-21
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Granted: 1958-08-05
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Expires: 1973-10-21
Abstract
No abstract record available.
Inventors
- 👤 John N Dempsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:33
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J9/042; H01J9/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF FORMING AN ELECTRON EMITTING BODY WHICH INCLUDES THE STEPS OF IMPREGNATING A POROUS METAL SPONGE MATRIX WITH AN AQUEOUS SOLUITION OF AN ALKALINE EARTH METAL FORMATE AND AN ALKALINE EARTH METAL ACETATE, SAID FORMATE AND SAID ACETATE BEING EMPLOYED IN SUBSTANTIALLY EQUI-MOLAR PROPORATIONS, THERMALLY DECOMPOSING SAID SALTS TO THE OXIDE FORM IN-SITU AND THEN ACTIVATING SAID OXIDE IMPREGNATED MATRIX TO CREATE ELECTRON EMITTING CHARACTERISTICS.
Claim 2
Independent Claim
67 words
THE METHOD OF FORMING AN ELECTRON EMITTING BODY WHICH INCLUDES THE STEPS OF IMPREGNATING A POROUS METAL SPONGE MATRIX WITH AN AQUEOUS SOLUITION OF AN ALKALINE EARTH METAL FORMATE AND AN ALKALINE EARTH METAL ACETATE, SAID FORMATE AND SAID ACETATE BEING EMPLOYED IN SUBSTANTIALLY EQUI-MOLAR PROPORATIONS, THERMALLY DECOMPOSING SAID SALTS TO THE OXIDE FORM IN-SITU AND THEN ACTIVATING SAID OXIDE IMPREGNATED MATRIX TO CREATE ELECTRON EMITTING CHARACTERISTICS.
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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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |