US3125441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Materials
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:29
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/0203; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
THE METHOD OF PRODUCIGN A HIGH PURITY COMPOSITE ELECTRODE METAL WHICH EVOLVES SUBSTANTIALLY NO GASES WHEN SUBJECTED TO ARCING CONDITIONS COMPRISING: PROVINDING A MATRIX OF SINTERED REFRACTORY METAL, SAID MATRIX HAVING SUBSTANTIALLY CONTINUOUS OPENINGS THERETHROUGH; HEATING SAID MATRIX IN A REDUCING ATMOSPHERE AND SIMULTANEOUSLY IMPREGNATING SAID MATRIX WITH A METAL POINT LOWER THAN THAT OF SAID REFRACTORY METAL, A VOPOR PRESSURE HIGHER THAN THE VAPOR PRESSURE OF SAID REFRACTORY METAL AND CAPABLE OF BEING ABSORBED INTO THE OPEININGS OF SAID MATRIX; COOLING THE COMPOSITE BODY SO FORMED TO SOLIDIFY THE IMPREGNATING METAL; AND SUBJECTING SAID COMPOSITE BODY TO A ZONE REFINING PROCESS WHEREIN A NARROW MOLTEN ZONE OF THE IMPREGNATING METAL TRAVERSES SAID BODY TO REMOVE SORBED AND CHEMICALLY BOUND ASES AND GAS FORMING COMOUNDS WHICH CAUSE THE EVOLUTION OF GAS WHEN SAID COMPOSITE ELECTRODE METAL IS SUBJECTED TO ARCING CONDITIONS.
Claim 2
Independent Claim
141 words
THE METHOD OF PRODUCIGN A HIGH PURITY COMPOSITE ELECTRODE METAL WHICH EVOLVES SUBSTANTIALLY NO GASES WHEN SUBJECTED TO ARCING CONDITIONS COMPRISING: PROVINDING A MATRIX OF SINTERED REFRACTORY METAL, SAID MATRIX HAVING SUBSTANTIALLY CONTINUOUS OPENINGS THERETHROUGH; HEATING SAID MATRIX IN A REDUCING ATMOSPHERE AND SIMULTANEOUSLY IMPREGNATING SAID MATRIX WITH A METAL POINT LOWER THAN THAT OF SAID REFRACTORY METAL, A VOPOR PRESSURE HIGHER THAN THE VAPOR PRESSURE OF SAID REFRACTORY METAL AND CAPABLE OF BEING ABSORBED INTO THE OPEININGS OF SAID MATRIX; COOLING THE COMPOSITE BODY SO FORMED TO SOLIDIFY THE IMPREGNATING METAL; AND SUBJECTING SAID COMPOSITE BODY TO A ZONE REFINING PROCESS WHEREIN A NARROW MOLTEN ZONE OF THE IMPREGNATING METAL TRAVERSES SAID BODY TO REMOVE SORBED AND CHEMICALLY BOUND ASES AND GAS FORMING COMOUNDS WHICH CAUSE THE EVOLUTION OF GAS WHEN SAID COMPOSITE ELECTRODE METAL IS SUBJECTED TO ARCING CONDITIONS.
References Cited (Backward Citations)
US2743199A
Cited
US2813808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |