US2658813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of selectively chloridizing manganese in the treatment of materials containing iron and manganese
Assignee: Republic Steel Corp
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Filing: 1951-10-05
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Granted: 1953-11-10
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Expires: 1971-10-05
Abstract
No abstract record available.
Inventors
- 👤 Irving P Whitehouse
- 👤 Graham Marion Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:53
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/08; C01; C01G; C01G45/00; C01G45/06; C01G45/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE PROCESS OF SELECTIVELY CHLORIDIZING MANGANESE IN THE TREATMENT OF MATERIAL CONTAINING IRON AND MANGANESE AND IN WHICH THE AMOUNT OF IRON PRESENT IS SUBSTANTIALLY GREATER THAN THE AMOUNT OF MANGANESE PRESENT, COMPRISING THE STEPS OF INTRODUCING SAID MATERIAL INTO A REACTION ZONE, MAINTAINING SAID MATERIAL IN SAID ZONE AT A TEMPERATURE IN THE RANGE OF ABOUT 300* F. TO ABOUT 900* F., PASSING HCL INTO SAID ZONE TO CONTACT SAID MATERIAL THEREIN, SUPPLYING TO SAID ZONE AN AMOUNT OF HYDROGEN SUFFICIENT SO THAT THE GASES LEAVING SAID ZONE CONTAIN AT LEAST A TRACE OF HYDROGEN, CARRYING ON THE STEPS AFORESAID UNTIL AT LEAST ABOUT 50% OF THE MANGANESE PRESENT HAS BEEN CONVERTED TO MNCL2, AND DISCONTINUING THE PROCESS STEPS AFORESAID WHEN THE RATIO OF MANGANESE CHLORIDE TO FERROUS CHLORIDE PRODUCED IS AT LEAST 1:1.
Claim 2
Dependent Claim
135 words
THE PROCESS OF SELECTIVELY CHLORIDIZING MANGANESE IN THE TREATMENT OF MATERIAL CONTAINING IRON AND MANGANESE AND IN WHICH THE AMOUNT OF IRON PRESENT IS SUBSTANTIALLY GREATER THAN THE AMOUNT OF MANGANESE PRESENT, COMPRISING THE STEPS OF INTRODUCING SAID MATERIAL INTO A REACTION ZONE, MAINTAINING SAID MATERIAL IN SAID ZONE AT A TEMPERATURE IN THE RANGE OF ABOUT 300* F. TO ABOUT 900* F., PASSING HCL INTO SAID ZONE TO CONTACT SAID MATERIAL THEREIN, SUPPLYING TO SAID ZONE AN AMOUNT OF HYDROGEN SUFFICIENT SO THAT THE GASES LEAVING SAID ZONE CONTAIN AT LEAST A TRACE OF HYDROGEN, CARRYING ON THE STEPS AFORESAID UNTIL AT LEAST ABOUT 50% OF THE MANGANESE PRESENT HAS BEEN CONVERTED TO MNCL2, AND DISCONTINUING THE PROCESS STEPS AFORESAID WHEN THE RATIO OF MANGANESE CHLORIDE TO FERROUS CHLORIDE PRODUCED IS AT LEAST 1:1.
References Cited (Backward Citations)
US2290843A
Cited
US2425995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |