US2721793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of beneficiating ferrotitaniferous ores
Assignee: Wyeth Holdings LLC
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Filing: 1954-01-08
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Granted: 1955-10-25
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Expires: 1974-01-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph J Magri
- 👤 Carroll W Sieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:53
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1204; C22B34/1209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A METHOD OF BENEFICIATING A FERRO-TITANIFEROUS ORE CONTAINING MORE THAN 10% BY WEIGHT OF COMBINED IRON CALCULATED AS FEO, WHICH INCLUDES THE STEPS OF REDUCING A SUBSTANTIAL PROPORTION OF SAID COMBINED IRON TO ELEMENTARY IRON AT A TEMPERATURE BETWEEN ABOUT 1800* F. AND THE HIGHER FLOW POINT OF THE TITANIFEROUS PHASE OF THE ORE IN THE PRESENCE OF SUFFICIENT OF A BORON COMPOUND TO FORM AN IRON-BORON COMPOSITION HAVING A FLOW POINT WITHIN SAID TEMPERATURE RANGE, AND MAINTAINING THE ORE AT A TEMPERATURE BETWEEN THE FLOW POINT OF SAID COMPOSITION AND THE HIGHER FLOW POINT OF THE TITANIFEROUS PHASE OF THE ORE UNTIL FLOW OF SAID IRON-BORON COMPOSITION FROM THE ORE HAS SUBSTANTIALLY CEASED.
Claim 2
Independent Claim
114 words
A METHOD OF BENEFICIATING A FERRO-TITANIFEROUS ORE CONTAINING MORE THAN 10% BY WEIGHT OF COMBINED IRON CALCULATED AS FEO, WHICH INCLUDES THE STEPS OF REDUCING A SUBSTANTIAL PROPORTION OF SAID COMBINED IRON TO ELEMENTARY IRON AT A TEMPERATURE BETWEEN ABOUT 1800* F. AND THE HIGHER FLOW POINT OF THE TITANIFEROUS PHASE OF THE ORE IN THE PRESENCE OF SUFFICIENT OF A BORON COMPOUND TO FORM AN IRON-BORON COMPOSITION HAVING A FLOW POINT WITHIN SAID TEMPERATURE RANGE, AND MAINTAINING THE ORE AT A TEMPERATURE BETWEEN THE FLOW POINT OF SAID COMPOSITION AND THE HIGHER FLOW POINT OF THE TITANIFEROUS PHASE OF THE ORE UNTIL FLOW OF SAID IRON-BORON COMPOSITION FROM THE ORE HAS SUBSTANTIALLY CEASED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |