US2848317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurizing of steel
Assignee: Bochumer Verein fuer Gussstahlfabrikation AG
•
Filing: 1956-01-10
•
Granted: 1958-08-19
•
Expires: 1976-01-10
Abstract
No abstract record available.
Inventors
- 👤 Coupette Werner
- 👤 Sickbert Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:21
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A METHOD OF DESULFURIZING STEEL, THE STEPS OF INTRODUCING A STREAM OF MOLTEN STEEL INTO A VACUUM CHAMBER UNDER A PRESSURE OF BETWEEN 30-0.1 MM. HG THROUGH AN OPENING HAVING A DIAMETER BETWEEN 25-70 MM. AND A SUFFICIENT FERROSTATIC PRESSURE OF THE MOLTEN STEEL ABOVE SAID OPENING THROUGH WHICH THE SAME IS INTRODUCED SO THAT SAID STREAM OF MOLTEN STEEL IS DISINTEGRATED INTO DROPLETS HAVING A SIZE BETWEEN 10 AND 10-3 MM. UPON INTRODUCTION OF SAID STREAM INTO SAID VACUUM CHAMBER, AND CONTACTING THE THUS FORMED DROPLETS OF MOLTEN STEEL IN SAID VACUUM CHAMBER WITH A DESULFURIZING AGENT SO AS TO DESULFURIZE SAID MOLTEN STEE.
Claim 2
Dependent Claim
106 words
IN A METHOD OF DESULFURIZING STEEL, THE STEPS OF INTRODUCING A STREAM OF MOLTEN STEEL INTO A VACUUM CHAMBER UNDER A PRESSURE OF BETWEEN 30-0.1 MM. HG THROUGH AN OPENING HAVING A DIAMETER BETWEEN 25-70 MM. AND A SUFFICIENT FERROSTATIC PRESSURE OF THE MOLTEN STEEL ABOVE SAID OPENING THROUGH WHICH THE SAME IS INTRODUCED SO THAT SAID STREAM OF MOLTEN STEEL IS DISINTEGRATED INTO DROPLETS HAVING A SIZE BETWEEN 10 AND 10-3 MM. UPON INTRODUCTION OF SAID STREAM INTO SAID VACUUM CHAMBER, AND CONTACTING THE THUS FORMED DROPLETS OF MOLTEN STEEL IN SAID VACUUM CHAMBER WITH A DESULFURIZING AGENT SO AS TO DESULFURIZE SAID MOLTEN STEE.
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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |