US2493394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of pouring metals and products produced thereby
Assignee: Vanadium Corp of America
•
Filing: 1946-08-27
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Granted: 1950-01-03
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Expires: 1966-08-27
Abstract
No abstract record available.
Inventors
- 👤 Dunn Holbert Earl
- 👤 Rathmann Heinrich Wilhelm
- 👤 Parkman Howard Calvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:10
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/10; C22B9/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
THE PROCESS OF CASTING HIGH CARBON FERROCHROMIUM WHICH COMPRISES FORMING IN A FURNACE A CHARGE OF MOLTEN FERRO-CHROMIUM HAVING THE USUAL SUPERNATANT VISCOUS SMELTING SLAG, FORMING IN A CASTING MOLD A BODY OF MOLTEN CASTING SLAG AT A TEMPERATURE APPROXIMATING THAT OF THE POURING TEMPERATURE OF THE FERRO-CHROMIUM AND CONSIDERABLY MORE FLUID THAN THE SMELTING SLAG, ALLOWING THE CASTING SLAG TO STAND IN THE MOLD UNTIL A THIN SKULL OF CHILLED STAG FORMS AGAINST THE BOTTOM AND SIDES OF THE MOLD, POURING THE MOLTEN FERRO-CHROMIUM TOGETHER WITH AT LEAST A PART OF ITS SMELTING SLAG INTO THE MOLD WHEREBY THE FERROCHROMIUM PASSES THROUGH THE CASTING SLAG TO FORM A REGULUS IN THE BOTTOM OF THE MOLD AND THE SMELTING SLAG IS ENTRAPPED BY AND DISSOLVED IN THE CASTING SLAG, AND ALLOWING THE FERRO-CHROMIUM TO SOLIDIFY AS A REGULUS IN THE BOTTOM OF THE MOLD.
Claim 2
Dependent Claim
144 words
THE PROCESS OF CASTING HIGH CARBON FERROCHROMIUM WHICH COMPRISES FORMING IN A FURNACE A CHARGE OF MOLTEN FERRO-CHROMIUM HAVING THE USUAL SUPERNATANT VISCOUS SMELTING SLAG, FORMING IN A CASTING MOLD A BODY OF MOLTEN CASTING SLAG AT A TEMPERATURE APPROXIMATING THAT OF THE POURING TEMPERATURE OF THE FERRO-CHROMIUM AND CONSIDERABLY MORE FLUID THAN THE SMELTING SLAG, ALLOWING THE CASTING SLAG TO STAND IN THE MOLD UNTIL A THIN SKULL OF CHILLED STAG FORMS AGAINST THE BOTTOM AND SIDES OF THE MOLD, POURING THE MOLTEN FERRO-CHROMIUM TOGETHER WITH AT LEAST A PART OF ITS SMELTING SLAG INTO THE MOLD WHEREBY THE FERROCHROMIUM PASSES THROUGH THE CASTING SLAG TO FORM A REGULUS IN THE BOTTOM OF THE MOLD AND THE SMELTING SLAG IS ENTRAPPED BY AND DISSOLVED IN THE CASTING SLAG, AND ALLOWING THE FERRO-CHROMIUM TO SOLIDIFY AS A REGULUS IN THE BOTTOM OF THE MOLD.
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) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |