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US2767053A
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Dissolution of titaniferous ore concentrates with amine addition
Assignee: NL Industries Inc
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Filing: 1953-07-30
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Granted: 1956-10-16
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Expires: 1973-07-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Griffin
- 👤 Rodgers Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:16
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D2203/00; B03D2203/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD FOR TREATMENT OF TITANIFEROUS ORES CONTAINING ORGANIC FLOTATION AGENTS SELECTED FROM THE GROUP CONSISTING OF ANIONIC FLOTATION AGENTS, PETROLEUM AGENTS AND ASPHALT MATERIALS TO RENDER THE SAME AMENABLE TO ATTACK BY CONCENTRATED SULFURIC ACID WHICH COMPRISES ADDING TO SAID ORE FROM 0.05 TO 0.2% OF ITS WEIGHT OF AN AMINE HAVING THE FORMULA
Claim 2
Independent Claim
55 words
A METHOD FOR TREATMENT OF TITANIFEROUS ORES CONTAINING ORGANIC FLOTATION AGENTS SELECTED FROM THE GROUP CONSISTING OF ANIONIC FLOTATION AGENTS, PETROLEUM AGENTS AND ASPHALT MATERIALS TO RENDER THE SAME AMENABLE TO ATTACK BY CONCENTRATED SULFURIC ACID WHICH COMPRISES ADDING TO SAID ORE FROM 0.05 TO 0.2% OF ITS WEIGHT OF AN AMINE HAVING THE FORMULA
References Cited (Backward Citations)
US2154130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |