Patent US4873655A successfully refreshed from Google Patents.
US2525263A
Expired / Lapsed
US
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Method of producing highly emissive electrodes
Assignee: Individual
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Filing: 1950-08-25
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Granted: 1950-10-10
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Expires: 1970-08-25
Abstract
No abstract record available.
Inventors
- 👤 Michel E Macksoud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:17
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J9/042; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12729; Y10T428/12771; Y10T428/12806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF PREPARING HIGHLY EMISSIVE ELECTRODES, WHICH INCLUDES THE STEPS OF APPLYING TO A MEMBER SELECTED FROM THE GROUP CONSISTING OF THORIUM ANDD ZICRONIUM AN AQUEOUS SOLUTION OF BARIUM AZIDE, HEATING THE COATED MEMBER AT A NON-OXIDIZING TEMPERATURE OF ABOUT 200*C. AND UNTIL THE BARIUM AZIDE IS CRYSTALLIZED OUT AND DEPOSITED ON THE SURFACCE OF THE MEMBER, AND SUBSEQUENTLY HEATING THE COATED MEMBER AT AN ELEVATED TEMPERATURE IN THE SUBSTANTIAL ABSENCE OF OXYGEN AND FOR A SUFFICIENT LENGTH OF TIME TO DISASSOCIATE THE BARIUM AZIDE TO FORM METALLIC BARIUM ON THE MEMBER AND ALLOY SAID BARIUM WITH THE MEMBER.
Claim 2
Independent Claim
100 words
THE METHOD OF PREPARING HIGHLY EMISSIVE ELECTRODES, WHICH INCLUDES THE STEPS OF APPLYING TO A MEMBER SELECTED FROM THE GROUP CONSISTING OF THORIUM ANDD ZICRONIUM AN AQUEOUS SOLUTION OF BARIUM AZIDE, HEATING THE COATED MEMBER AT A NON-OXIDIZING TEMPERATURE OF ABOUT 200*C. AND UNTIL THE BARIUM AZIDE IS CRYSTALLIZED OUT AND DEPOSITED ON THE SURFACCE OF THE MEMBER, AND SUBSEQUENTLY HEATING THE COATED MEMBER AT AN ELEVATED TEMPERATURE IN THE SUBSTANTIAL ABSENCE OF OXYGEN AND FOR A SUFFICIENT LENGTH OF TIME TO DISASSOCIATE THE BARIUM AZIDE TO FORM METALLIC BARIUM ON THE MEMBER AND ALLOY SAID BARIUM WITH THE MEMBER.
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |