Patent US2758019A successfully refreshed from Google Patents.
US2758019A
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Separation of iron from titaniferous iron ores
Assignee: NL Industries Inc
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Filing: 1951-11-03
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Granted: 1956-08-07
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Expires: 1971-11-03
Abstract
No abstract record available.
Inventors
- 👤 John M Daubenspeck
- 👤 Robert D Toomey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:12
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/08; C22B34/00; C22B34/10; C22B34/12; C22B34/1204; C22B34/1209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD FOR SEPARATING THE IRON VALUES FROM THE TITANIUM VALUES IN A TITANIFEROUS IRON ORE CONTAINING BOTH FERROUS AND FERRIC IRON WHICH COMPRISES TREATING SAID ORE WITH AN OXIDIZING AGENT AND TITANIUM TETRACHLORIDE IN THE ABSENCE OF A REDUCING AGENT AT A TEMPERATURE OF AT LEAST 500* C. TO FORM VOLATILIZED FERRIC CHLORIDE AND TITANIUM DIOXIDE, SAID TITANIUM TETRACHLORIDE BEING ADDED IN SUBSTANTIALLY THE STOICHIOMETRIC AMOUNT TO REACT WITH THE IRON VALUES TO FORM IRON CHLORIDE AND TITANIUM DIOXIDE, SAID OXIDIZING AGENT BEING ADDED IN AMOUNT TO OXIDIZE THE FERROUS IRON VALUES TO FERRIC IRON.
Claim 2
Independent Claim
96 words
A METHOD FOR SEPARATING THE IRON VALUES FROM THE TITANIUM VALUES IN A TITANIFEROUS IRON ORE CONTAINING BOTH FERROUS AND FERRIC IRON WHICH COMPRISES TREATING SAID ORE WITH AN OXIDIZING AGENT AND TITANIUM TETRACHLORIDE IN THE ABSENCE OF A REDUCING AGENT AT A TEMPERATURE OF AT LEAST 500* C. TO FORM VOLATILIZED FERRIC CHLORIDE AND TITANIUM DIOXIDE, SAID TITANIUM TETRACHLORIDE BEING ADDED IN SUBSTANTIALLY THE STOICHIOMETRIC AMOUNT TO REACT WITH THE IRON VALUES TO FORM IRON CHLORIDE AND TITANIUM DIOXIDE, SAID OXIDIZING AGENT BEING ADDED IN AMOUNT TO OXIDIZE THE FERROUS IRON VALUES TO FERRIC IRON.
References Cited (Backward Citations)
US1528319A
Cited
US1845342A
Cited
US2183365A
Cited
US2184884A
Cited
US2494337A
Cited
GB587774A
Cited
US2621118A
Cited
US2589466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |