Patent US3374088A successfully refreshed from Google Patents.
US3374088A
Expired / Lapsed
US
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Method for producing low silicon ferromanganese alloys
Assignee: Bethlehem Steel Corp
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Filing: 1966-02-16
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Granted: 1968-03-19
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Expires: 1986-02-16
Abstract
No abstract record available.
Inventors
- 👤 Epstein Henry
- 👤 Neubaum Victor Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:52
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/32; Y; Y10; Y10S; Y10S75/00; Y10S75/957
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD OF REDUCING THE SILICON CONTENT OF A CONTINUOUSLY FLOWING SUBSTANTIALLY HORIZONTAL MOLTEN STREAM OF FERROMANGANEE FLOWING THROUGH A TROUGH, SAID STREAM BEING ABOUT 2 INCHES TO ABOUT 8 INCHES DEEP, COMPRISING BLOWING ABOUT 60 CUBIC FEET TO ABOUT 75 CUBIC FEET PER MINUTE OF A COMMERCIALLY PURE OXYGEN ONTO THE SURFACE OF THE FLOWING STREAM OF MOLTEN FERROMANGANESE AT A VELOCITY OF 700 FEET PER SECOND TO ABOUT 1000 FEET PER SECOND THROUGH A LANCE, SAID LANCE BEING LOCATED IN A VERTICAL PLANE PASSING THROUGH THE LONGITUDINAL AXIS OF THE TROUGH AND BEING DISPOSED AT AN ANGLE TO THE VERTICAL OF ABOUT 15* TO ABOUT 45* AND HAVING ITS NOZZLE ABOUT 2 INCHES TO ABOUT 8 INCHES ABOVE THE SURFACE OF THE STREAM.
Claim 2
Independent Claim
125 words
A METHOD OF REDUCING THE SILICON CONTENT OF A CONTINUOUSLY FLOWING SUBSTANTIALLY HORIZONTAL MOLTEN STREAM OF FERROMANGANEE FLOWING THROUGH A TROUGH, SAID STREAM BEING ABOUT 2 INCHES TO ABOUT 8 INCHES DEEP, COMPRISING BLOWING ABOUT 60 CUBIC FEET TO ABOUT 75 CUBIC FEET PER MINUTE OF A COMMERCIALLY PURE OXYGEN ONTO THE SURFACE OF THE FLOWING STREAM OF MOLTEN FERROMANGANESE AT A VELOCITY OF 700 FEET PER SECOND TO ABOUT 1000 FEET PER SECOND THROUGH A LANCE, SAID LANCE BEING LOCATED IN A VERTICAL PLANE PASSING THROUGH THE LONGITUDINAL AXIS OF THE TROUGH AND BEING DISPOSED AT AN ANGLE TO THE VERTICAL OF ABOUT 15* TO ABOUT 45* AND HAVING ITS NOZZLE ABOUT 2 INCHES TO ABOUT 8 INCHES ABOVE THE SURFACE OF THE STREAM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |