US2919189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of alloys
Assignee: Alscope Explorations Ltd
•
Filing: 1958-03-07
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Granted: 1959-12-29
•
Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 Nossen Ernest Samuel
- 👤 Roy E Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:10
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A ONE-STEP PROCESS FOR THE PREPARATION OF AN ALLOY, WHICH COMPRISES REACTING AN OXIDE OF AT LEAST ONE REFRACTORY METAL WITH AN EQUIVALENT AMOUNT OF REDUCING METAL ABOVE THE MELTING POINT OF SAID REDUCING METAL, WHEREBY SAID REFACTORY METAL OXIDE IS REDUCED TO THE METALLIC STATE AND A SLAG-FORMING OXIDE IS REDUCED TO THE METAL IS FORMED, SAID REACTION BEING CARRIED OUT IN THE PRESENCE OF AN AMOUNT OF MOLTEN NON-REACTING METAL CAPABLE OF ALLOYING WITH SAID REFRACTORY METAL AND IN THE PRESENCE OF A MOLTEN SALT SOLVENT CAPABLE OF DISSOLVING THE SLAG-COMPRISING REDUCING METAL OXIDE FORMED DURING THE REACTION, SAID REDUCING METAL HAVING A LOWER POSITION IN THE ELECTROMOTIVE SERIES AT THE REACTION TEMPERATURE THAN SAID REFRACTORY METAL, AND SAID MOLTEN SALT SOLVENT BEING PRESENT IN AN EXCESS SUFFICIENT TO DISSOLVE SAID SLAG FORMED BY SAID REDUCING METAL OXIDE.
Claim 2
Dependent Claim
140 words
A ONE-STEP PROCESS FOR THE PREPARATION OF AN ALLOY, WHICH COMPRISES REACTING AN OXIDE OF AT LEAST ONE REFRACTORY METAL WITH AN EQUIVALENT AMOUNT OF REDUCING METAL ABOVE THE MELTING POINT OF SAID REDUCING METAL, WHEREBY SAID REFACTORY METAL OXIDE IS REDUCED TO THE METALLIC STATE AND A SLAG-FORMING OXIDE IS REDUCED TO THE METAL IS FORMED, SAID REACTION BEING CARRIED OUT IN THE PRESENCE OF AN AMOUNT OF MOLTEN NON-REACTING METAL CAPABLE OF ALLOYING WITH SAID REFRACTORY METAL AND IN THE PRESENCE OF A MOLTEN SALT SOLVENT CAPABLE OF DISSOLVING THE SLAG-COMPRISING REDUCING METAL OXIDE FORMED DURING THE REACTION, SAID REDUCING METAL HAVING A LOWER POSITION IN THE ELECTROMOTIVE SERIES AT THE REACTION TEMPERATURE THAN SAID REFRACTORY METAL, AND SAID MOLTEN SALT SOLVENT BEING PRESENT IN AN EXCESS SUFFICIENT TO DISSOLVE SAID SLAG FORMED BY SAID REDUCING METAL OXIDE.
References Cited (Backward Citations)
US1020517A
Cited
US1089773A
Cited
US1562041A
Cited
US1602542A
Cited
US1533505A
Cited
US1912382A
Cited
US2013877A
Cited
US2578098A
Cited
US2550447A
Cited
US2781261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |