US3301661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing iron and steel
Assignee: Lukens Inc
•
Filing: 1965-03-25
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Granted: 1967-01-31
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Expires: 1985-03-25
Abstract
No abstract record available.
Inventors
- 👤 James J Mcglynn
- 👤 James L Ma
- 👤 William H Funk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:34
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/32; C21C5/56; C21C5/562; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
A PROCESS FOR THE PRODUCTION OF IRON AND STEEL COMPRISING THE STEPS OF FEEDING A SOURCE OF IRON, A SOLID CARBONACEOUS FUEL AND FLUX INTO THE UPPER PART OF A HEATED STACK, ALLOWING MOLTEN IRON TO FLOW BY GRAVITY FROM THE BOTTOM OF THE STACK TO A FIRST SECTION OF A VESSEL, PERMITTING MOLTEN METAL TO FLOW FROM THE FIRST SECTION TO A SECOND SECTION OF SAID VESSEL WHILE PARTITIONING THE RESPECTIVE ATMOSPHERES IN EACH SECTION FROM ONE ANOTHER, MAINTAINING DIFFERENT ATMOSPHERES ABOVE THE MOLTEN METAL IN SAID SECTIONS, JET OXYGEN REFINING THE MOLTEN IRON WITHIN THE SECOND SECTION OF SAID VESSEL AND CIRCULATING THE HOT GASEOUS EFFLUENTS GENERATED BY SAID REFINING STEP TO THE LOWER PART OF SAID STACK.
Claim 2
Dependent Claim
120 words
A PROCESS FOR THE PRODUCTION OF IRON AND STEEL COMPRISING THE STEPS OF FEEDING A SOURCE OF IRON, A SOLID CARBONACEOUS FUEL AND FLUX INTO THE UPPER PART OF A HEATED STACK, ALLOWING MOLTEN IRON TO FLOW BY GRAVITY FROM THE BOTTOM OF THE STACK TO A FIRST SECTION OF A VESSEL, PERMITTING MOLTEN METAL TO FLOW FROM THE FIRST SECTION TO A SECOND SECTION OF SAID VESSEL WHILE PARTITIONING THE RESPECTIVE ATMOSPHERES IN EACH SECTION FROM ONE ANOTHER, MAINTAINING DIFFERENT ATMOSPHERES ABOVE THE MOLTEN METAL IN SAID SECTIONS, JET OXYGEN REFINING THE MOLTEN IRON WITHIN THE SECOND SECTION OF SAID VESSEL AND CIRCULATING THE HOT GASEOUS EFFLUENTS GENERATED BY SAID REFINING STEP TO THE LOWER PART OF SAID STACK.
Claim 3
Independent Claim
118 words
AN APPARATUS COMPRISING A SUSTANTIALLY VERTICALLY DISPOSED STACK FOR RECEIVING A CHARGE OF MATERIALS USED IN THE PRODUCTION OF IRON AND STEEL, A COLLECTING AND REFINING VESSEL DISPOSED BELOW SAID STACK, SAID VESSEL BEING DIVIDED INTO TWO SECTIONS BY A PARTITION, A PASSAGEWAY CONNECTING SAID SECTIONS BELOW THE NORMAL LIQUID LEVEL, THE FIRST OF SAID SECTIONS BEING A COLLECTING SECTION IN DIRECT COMMUNICATION WITH THE LOWER PART OF THE STACK FOR RECEIVING MOLTEN IRON, MEANS FOR INTRODUCING AN OXYGEN JET INTO THE SECOND OF SAID SECTIONS ABOVE THE NORMAL LIQUID LEVEL, CONDUIT MEANS FOR DELIVERING THE HOT EFFLUENTS FROM SAID SECOND SECTION TO THE LOWER PART OF SAID STACK SAID SECTIONS HAVING DIFFERENT ATMOSPHERES ABOVE THE MOLTEN METAL.
Claim 4
Independent Claim
118 words
AN APPARATUS COMPRISING A SUSTANTIALLY VERTICALLY DISPOSED STACK FOR RECEIVING A CHARGE OF MATERIALS USED IN THE PRODUCTION OF IRON AND STEEL, A COLLECTING AND REFINING VESSEL DISPOSED BELOW SAID STACK, SAID VESSEL BEING DIVIDED INTO TWO SECTIONS BY A PARTITION, A PASSAGEWAY CONNECTING SAID SECTIONS BELOW THE NORMAL LIQUID LEVEL, THE FIRST OF SAID SECTIONS BEING A COLLECTING SECTION IN DIRECT COMMUNICATION WITH THE LOWER PART OF THE STACK FOR RECEIVING MOLTEN IRON, MEANS FOR INTRODUCING AN OXYGEN JET INTO THE SECOND OF SAID SECTIONS ABOVE THE NORMAL LIQUID LEVEL, CONDUIT MEANS FOR DELIVERING THE HOT EFFLUENTS FROM SAID SECOND SECTION TO THE LOWER PART OF SAID STACK SAID SECTIONS HAVING DIFFERENT ATMOSPHERES ABOVE THE MOLTEN METAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |