Patent US2252864A successfully refreshed from Google Patents.
Patent US2596072A successfully refreshed from Google Patents.
US2596072A
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Process of selectively reducing ferrous chloride in the vapor phase from a gaseous mixture of manganese and ferrous chloride
Assignee: Henry L Crowley & Co Inc
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Filing: 1951-03-28
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Granted: 1952-05-06
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Expires: 1971-03-28
Abstract
No abstract record available.
Inventors
- 👤 Graham Marion Ernest
- 👤 Edward A Beidler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:15
CPC Classifications
C; C21; C21B; C21B15/00; C21B15/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE PROCESS OF SELECTIVELY REDUCING FERROUS CHLORIDE FROM A GASEOUS MIXTURE, THE ESSENTIAL ACTIVE INGREDIENTS OF WHICH ARE THE VAPORS OF MANGANESE CHLORIDE AND FERROUS CHLORIDE, AND IN WHICH THE WEIGHT RATIO OF FERROUS CHLORIDE TO MANGANESE CHLORIDE IS AT LEAST ABOUT 2:3, TO FORM SUBSTANTIALLY PURE METALLIC IRON, WHICH COMPRISES THE STEPS OF CONTACTING THE MIXED VAPORS OF FERROUS AND MANGANESE CHLORIDES IN A REDUCING ZONE WITH A GAS, THE ESSENTIAL ACTIVE REDUCING INGREDIENT OF WHICH IS HYDROGEN, AND MAINTAINING THE TEMPERTURE OF SAID CHLORIDES AND SAID GAS IN SAID REDUCING ZONE BETWEEN ABOUT 800* C. AND THE MELTING POINT OF IRON.
Claim 2
Dependent Claim
103 words
THE PROCESS OF SELECTIVELY REDUCING FERROUS CHLORIDE FROM A GASEOUS MIXTURE, THE ESSENTIAL ACTIVE INGREDIENTS OF WHICH ARE THE VAPORS OF MANGANESE CHLORIDE AND FERROUS CHLORIDE, AND IN WHICH THE WEIGHT RATIO OF FERROUS CHLORIDE TO MANGANESE CHLORIDE IS AT LEAST ABOUT 2:3, TO FORM SUBSTANTIALLY PURE METALLIC IRON, WHICH COMPRISES THE STEPS OF CONTACTING THE MIXED VAPORS OF FERROUS AND MANGANESE CHLORIDES IN A REDUCING ZONE WITH A GAS, THE ESSENTIAL ACTIVE REDUCING INGREDIENT OF WHICH IS HYDROGEN, AND MAINTAINING THE TEMPERTURE OF SAID CHLORIDES AND SAID GAS IN SAID REDUCING ZONE BETWEEN ABOUT 800* C. AND THE MELTING POINT OF IRON.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |