US2592973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of minerals
Assignee: United Glass Bottle Manufacturers Ltd
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Filing: 1949-10-22
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Granted: 1952-04-15
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Expires: 1969-10-22
Abstract
No abstract record available.
Inventors
- 👤 Sturgeon Reginald
- 👤 Seddon Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
C; C03; C03C; C03C1/00; C03C1/02; C03C1/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR REDUCING IRON IMPURITIES IN MINERALS WHICH CONSISTS IN TREATING THE MINERALS WITH AN AQUEOUS SOLUTION WHICH IS FREE FROM FLUORINE IONS AND OXALIC ACID BUT IN WHICH THE DISSOLVED CONSTITUENTS CONSIST ESSENTIALLY OF METALLIC SALTS ONE OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF TITANOUS SULPHATE AND TITANOUS CHLORIDE, AND THE OTHER IS SELECTED FROM THE GROUP CONSISTING OF SODIUM SULPHATE AND SODIUM CHLORIDE AND RECOVERING THE PURIFIED MINERAL PRODUCT.
Claim 2
Dependent Claim
74 words
A PROCESS FOR REDUCING IRON IMPURITIES IN MINERALS WHICH CONSISTS IN TREATING THE MINERALS WITH AN AQUEOUS SOLUTION WHICH IS FREE FROM FLUORINE IONS AND OXALIC ACID BUT IN WHICH THE DISSOLVED CONSTITUENTS CONSIST ESSENTIALLY OF METALLIC SALTS ONE OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF TITANOUS SULPHATE AND TITANOUS CHLORIDE, AND THE OTHER IS SELECTED FROM THE GROUP CONSISTING OF SODIUM SULPHATE AND SODIUM CHLORIDE AND RECOVERING THE PURIFIED MINERAL PRODUCT.
References Cited (Backward Citations)
US2381843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |