Patent US2604393A successfully refreshed from Google Patents.
US2604393A
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Method of desulfurizing iron and steel with metal hydrides
Assignee: Individual
•
Filing: 1949-03-07
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Granted: 1952-07-22
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Expires: 1969-03-07
Abstract
No abstract record available.
Inventors
- 👤 Smalley Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:34
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/064; C21C7/0645
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE TREATMENT OF MOLTEN FERROUS METAL TO REDUCE THE SULPHUR CONTENT THEREOF, COMPRISING THE STEPS OF PROVIDING A MASS OF MOLTEN FERROUS MATERIAL, COVERING SAID MASS WITH BASIC MOLTEN SLAG, INTRODUCING A REAGENT TO SAID MASS, SAID REAGENT HAVING THE FORMULA RXHX, WHERE R IS AN ALKALI METAL AND X DENOTES THE VALENCE RELATIONSHIP, AND THEREAFTER SEPARATING THE MOLTEN FERROUS METAL FROM ANY SLAG THEREON.
Claim 2
Dependent Claim
65 words
THE TREATMENT OF MOLTEN FERROUS METAL TO REDUCE THE SULPHUR CONTENT THEREOF, COMPRISING THE STEPS OF PROVIDING A MASS OF MOLTEN FERROUS MATERIAL, COVERING SAID MASS WITH BASIC MOLTEN SLAG, INTRODUCING A REAGENT TO SAID MASS, SAID REAGENT HAVING THE FORMULA RXHX, WHERE R IS AN ALKALI METAL AND X DENOTES THE VALENCE RELATIONSHIP, AND THEREAFTER SEPARATING THE MOLTEN FERROUS METAL FROM ANY SLAG THEREON.
References Cited (Backward Citations)
US1515794A
Cited
US1869496A
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US1869979A
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US1931144A
Cited
US1869980A
Cited
US2110066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |