US2807537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling the partial blowing of bessemer steel
Assignee: Bethlehem Steel Corp
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Filing: 1954-11-01
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Granted: 1957-09-24
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Expires: 1974-11-01
Abstract
No abstract record available.
Inventors
- 👤 Donald W Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A METHOD OF CONTROLLING A BESSEMER CONVERTER, THE STEPS INCLUDING APPLYING BLAST TO A BATH OF MOLTEN METAL, MEASURING AND RECORDING THE RADIANT ENERGY EMITTED BY THE CONVERTER FLAME DURING THE BLOW OF THE HEAT TAKEN THE START OF THE CARBON PLATEAU ON THE RECORD OF SUCH EMISSION AS A REFERENCE POINT, CONTINUING TO APPLY THE BLAST AND TURNING DOWN THE VESSEL AND SHUTTING OFF THE
Claim 2
Dependent Claim
67 words
IN A METHOD OF CONTROLLING A BESSEMER CONVERTER, THE STEPS INCLUDING APPLYING BLAST TO A BATH OF MOLTEN METAL, MEASURING AND RECORDING THE RADIANT ENERGY EMITTED BY THE CONVERTER FLAME DURING THE BLOW OF THE HEAT TAKEN THE START OF THE CARBON PLATEAU ON THE RECORD OF SUCH EMISSION AS A REFERENCE POINT, CONTINUING TO APPLY THE BLAST AND TURNING DOWN THE VESSEL AND SHUTTING OFF THE
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |