US2530368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying molten iron
Assignee: JAMES JORDAN LAB
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Filing: 1950-04-01
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Granted: 1950-11-21
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Expires: 1970-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jordan James Fernando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:53
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/08; C22C33/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN THE PROCESS FOR PRODUCING NODULAR GRAPHITE CAST IRON BY TREATING MOLTEN CAST IRON CONTAINING SULPHUR WITH A CONTROLLED AMOUNT OF MAGNESIUM AND AN INOCULATING AGENT, THE METHOD OF PREPARING SAID MOLTEN CAST IRON FOR CONVERSION INTO SAID MODULAR GRAPHITE CAST IRON, WHICH COMPRISES: DESULPHURIZING SAID MOLTEN CAST IRON BY REACTING SAID MOLTEN CAST IRON WITH SUFFICIENT MAGNESIUM TO PRODUCE A MOLTEN CAST IRON CONTAINING AT LEAST 0.01% RETAINED MAGNESIUM; AND REACTING THE RESULTING DESULPHURIZED MOLTEN CAST IRON WITH A REAGENT THAT IS OXIDIZING TOWARDS SAID RETAINED MAGNESIUM UNTIL THE RETAINED MAGNESIUM CONTENT OF SAID DESULPHURIZED MOLTEN CAST IRON HAS BEEN SUBSTANTIALLY ALL OXIDIZED BY SAID REAGENT.
Claim 2
Dependent Claim
107 words
IN THE PROCESS FOR PRODUCING NODULAR GRAPHITE CAST IRON BY TREATING MOLTEN CAST IRON CONTAINING SULPHUR WITH A CONTROLLED AMOUNT OF MAGNESIUM AND AN INOCULATING AGENT, THE METHOD OF PREPARING SAID MOLTEN CAST IRON FOR CONVERSION INTO SAID MODULAR GRAPHITE CAST IRON, WHICH COMPRISES: DESULPHURIZING SAID MOLTEN CAST IRON BY REACTING SAID MOLTEN CAST IRON WITH SUFFICIENT MAGNESIUM TO PRODUCE A MOLTEN CAST IRON CONTAINING AT LEAST 0.01% RETAINED MAGNESIUM; AND REACTING THE RESULTING DESULPHURIZED MOLTEN CAST IRON WITH A REAGENT THAT IS OXIDIZING TOWARDS SAID RETAINED MAGNESIUM UNTIL THE RETAINED MAGNESIUM CONTENT OF SAID DESULPHURIZED MOLTEN CAST IRON HAS BEEN SUBSTANTIALLY ALL OXIDIZED BY SAID REAGENT.
References Cited (Backward Citations)
US2485760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |