Patent US3303018A successfully refreshed from Google Patents.
US3303018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of refining steel in rotary reactor
Assignee: Fuji Iron and Steel Co Ltd
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Filing: 1963-09-24
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Granted: 1967-02-07
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Expires: 1983-09-24
Abstract
No abstract record available.
Inventors
- 👤 Norman P Goss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:02
CPC Classifications
F; F27; F27D; F27D27/00; C; C21; C21C; C21C5/00; C21C5/56; C21C5/567; F27D3/00; F27D3/14; F27B; F27B7/00; F27B7/20; F27B7/36; F27B7/362; F27B2007/365; F27D3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE METHOD OF TREATING MOLTEN IRON COMRPSING THE STEPS OF SUBJECTING A CONTINUOUS SHALLOW DEPTH STREAM OF SAID MOLTEN IRON TO FLOW UNDER SUPERGRAVITATIONAL FORCES WHILE CONFINED IN A GENERALLY HELICAL PATH, CONTACTING SAID MOLTEN IRON IN SAID PATH WITH A MOLTEN FLUX FOR REMOVING CERTAIN IMPURITIES FROM SAID IRON, SAID SUPERGRAVITATIONAL FORCES SEPARATING SAID IRON AND SAID FLUX INTO RADIALLY OUTER AND INNER LAYERS RESPECTIVELY, AND SUBJECTING SAID MOLTEN STREAM IN SAID PATH TO AT LEAST ONE JET STREAM DIRECTED AGAINST SAID FLUX IN A RADIALLY OUTWARD DIRECTION WITH SUFFICIENT FORCE TO DRIVE SAID FLUX LAYER INTO SAID METAL LAYER TO INCREASE THE TURBLENT MIXING OF SAID FLUX WITH SAID MOLTEN IRON, WHEREBY THE REACTION TIME IS GREATLY DECREASED.
Claim 2
Independent Claim
120 words
THE METHOD OF TREATING MOLTEN IRON COMRPSING THE STEPS OF SUBJECTING A CONTINUOUS SHALLOW DEPTH STREAM OF SAID MOLTEN IRON TO FLOW UNDER SUPERGRAVITATIONAL FORCES WHILE CONFINED IN A GENERALLY HELICAL PATH, CONTACTING SAID MOLTEN IRON IN SAID PATH WITH A MOLTEN FLUX FOR REMOVING CERTAIN IMPURITIES FROM SAID IRON, SAID SUPERGRAVITATIONAL FORCES SEPARATING SAID IRON AND SAID FLUX INTO RADIALLY OUTER AND INNER LAYERS RESPECTIVELY, AND SUBJECTING SAID MOLTEN STREAM IN SAID PATH TO AT LEAST ONE JET STREAM DIRECTED AGAINST SAID FLUX IN A RADIALLY OUTWARD DIRECTION WITH SUFFICIENT FORCE TO DRIVE SAID FLUX LAYER INTO SAID METAL LAYER TO INCREASE THE TURBLENT MIXING OF SAID FLUX WITH SAID MOLTEN IRON, WHEREBY THE REACTION TIME IS GREATLY DECREASED.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |