Patent US2212744A successfully refreshed from Google Patents.
Patent US3060015A successfully refreshed from Google Patents.
US3060015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel purification
Assignee: Ruhrstahl AG
•
Filing: 1960-03-22
•
Granted: 1962-10-23
•
Expires: 1980-03-22
Abstract
No abstract record available.
Inventors
- 👤 Spolders Rudolf
- 👤 Breuing Wilhelm
- 👤 Pieper Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:03
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A METHOD OF PURIFYING MOLTEN STEEL, THE STEPS OF REACTING CARBON MONOXIDE GAS WITH OXYGEN GAS SO AS TO FORM A HOT COMBUSTION GAS HAVING DUE TO THE REACTION HEAT CAUSED BY THE EXOTHERMIC NATURE OF THE REACTION A TEMPERATURE SUBSTANTIALLY HIGHER THAN THE INITIAL TEMPERATURE OF THE REACTING GASES AND CONSISTING AT LEAST PARTLY OF CARBON DIOXIDE GAS; AND IMMEDIATELY UPON FORMATION OF SAID HOT COMBUSTION GAS BLOWING THE SAME AT SAID SUBSTANTIALLY HIGHER TEMPERATURE INTO A BATH OF MOLTEN STEEL SO AS TO OBTAIN PURIFICATIO OF THE SAME, THE HIGH TEMPERATURE OF THE THUS INTRODUCED HOT COMBUSTION GAS DUE TO SAID REACTION HEAT CAUSED BY THE EXOTHERMIC NATURE OF THE REACTION AVOIDING ANY SUBSTANTIAL COOLING EFFECT OF THE INTRODUCED GAS ON SAID BATH OF MOLTEN STEEL DURING SID PURIFICATION THEREOF.
Claim 2
Dependent Claim
133 words
IN A METHOD OF PURIFYING MOLTEN STEEL, THE STEPS OF REACTING CARBON MONOXIDE GAS WITH OXYGEN GAS SO AS TO FORM A HOT COMBUSTION GAS HAVING DUE TO THE REACTION HEAT CAUSED BY THE EXOTHERMIC NATURE OF THE REACTION A TEMPERATURE SUBSTANTIALLY HIGHER THAN THE INITIAL TEMPERATURE OF THE REACTING GASES AND CONSISTING AT LEAST PARTLY OF CARBON DIOXIDE GAS; AND IMMEDIATELY UPON FORMATION OF SAID HOT COMBUSTION GAS BLOWING THE SAME AT SAID SUBSTANTIALLY HIGHER TEMPERATURE INTO A BATH OF MOLTEN STEEL SO AS TO OBTAIN PURIFICATIO OF THE SAME, THE HIGH TEMPERATURE OF THE THUS INTRODUCED HOT COMBUSTION GAS DUE TO SAID REACTION HEAT CAUSED BY THE EXOTHERMIC NATURE OF THE REACTION AVOIDING ANY SUBSTANTIAL COOLING EFFECT OF THE INTRODUCED GAS ON SAID BATH OF MOLTEN STEEL DURING SID PURIFICATION THEREOF.
References Cited (Backward Citations)
US1481747A
Cited
US1748750A
Cited
US1792967A
Cited
US1921060A
Cited
US2395458A
Cited
US2506598A
Cited
US2515631A
Cited
US2793110A
Cited
US2865736A
Cited
US2866701A
Cited
US2883279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |