Patent US2777755A successfully refreshed from Google Patents.
US2777755A
Expired / Lapsed
US
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Treatment of iron bearing material
Assignee: Bethlehem Steel Corp
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Filing: 1952-08-08
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Granted: 1957-01-15
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Expires: 1972-08-08
Abstract
No abstract record available.
Inventors
- 👤 John E Eberhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:03
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR TREATING OXIDIC ORE CONTAINING IRON TO SEPARATE IRON FROM THE GARAGE, COMPRISING THE STEPS OF CHARGING THE ORE INTO A CHLORIDIZING CHAMBER, MAINTAINING THE ORE AT A TEMPERATURE AT LEAST AS HIGH AS THE BOILING POINT OF FERRIC CHLORIDE, PASSING GAS CONSISTING PREDOMINANTLY OF HYDROCHLORIC ACID THROUGH THE CHLORIDZING CHAMBER AND IN CONTACT WITH THE ORE THEREIN TO PRODUCE A GASEOUS MIXTURE CONTAINING FERRIC CHLORIDE AND WATER VAPOR, ELEVATING THE TEMPERATURE OF THIS GASEOUS MIXTURE AFTER IT HAS LEFT THE CHLORIDIZING CHAMBER TO FORM FERRIC OXIDE IN THE SOLID PHASE AND HYDROCHLORIC ACID GAS AND REING CHAMBER.
Claim 2
Dependent Claim
100 words
A PROCESS FOR TREATING OXIDIC ORE CONTAINING IRON TO SEPARATE IRON FROM THE GARAGE, COMPRISING THE STEPS OF CHARGING THE ORE INTO A CHLORIDIZING CHAMBER, MAINTAINING THE ORE AT A TEMPERATURE AT LEAST AS HIGH AS THE BOILING POINT OF FERRIC CHLORIDE, PASSING GAS CONSISTING PREDOMINANTLY OF HYDROCHLORIC ACID THROUGH THE CHLORIDZING CHAMBER AND IN CONTACT WITH THE ORE THEREIN TO PRODUCE A GASEOUS MIXTURE CONTAINING FERRIC CHLORIDE AND WATER VAPOR, ELEVATING THE TEMPERATURE OF THIS GASEOUS MIXTURE AFTER IT HAS LEFT THE CHLORIDIZING CHAMBER TO FORM FERRIC OXIDE IN THE SOLID PHASE AND HYDROCHLORIC ACID GAS AND REING CHAMBER.
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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) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |