US3278028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation of mica
Assignee: Individual
•
Filing: 1963-10-31
•
Granted: 1966-10-11
•
Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Frank W Millsaps
- 👤 James S Browning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:50
CPC Classifications
C; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/20; B; B03; B03D; B03D1/00; B03D1/001; B03D1/002; B03D1/004; B03D1/008; B03D1/01; H; H01; H01B; H01B3/00; H01B3/02; H01B3/04; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR BENEFICIATING MICA ORE COMPRISING ADDING TO AN AQUEOUS PULP OF THE ORE IN A FLOTATION CELL (1) AN AMOUNT OF ALKALINE INORGANIC REAGENT SUFFICIENT TO RAISE THE PH OF THE AQUEOUS PULP OF FROM 8 TO 11, (12) AN ANIONIC REAGENT SELECTED FROM THE GROUP CONSISTING OF OLEIC ACID, LINOLEIC ACID, LINOLENIC ACID, STEARIC ACID PALMITIC ACID, ROSIN ACIDS AND MIXTURE THEREOF; AND (3) AN AMINE ACETATE HAVING AN ALKYL GROUP CONTAINING FROM 8 TO 22 CARBON ATOMS, FROTH FLOATING THE ORE, AND COLLECTING THE MICA CONTAINING FROTH.
Claim 2
Dependent Claim
91 words
A PROCESS FOR BENEFICIATING MICA ORE COMPRISING ADDING TO AN AQUEOUS PULP OF THE ORE IN A FLOTATION CELL (1) AN AMOUNT OF ALKALINE INORGANIC REAGENT SUFFICIENT TO RAISE THE PH OF THE AQUEOUS PULP OF FROM 8 TO 11, (12) AN ANIONIC REAGENT SELECTED FROM THE GROUP CONSISTING OF OLEIC ACID, LINOLEIC ACID, LINOLENIC ACID, STEARIC ACID PALMITIC ACID, ROSIN ACIDS AND MIXTURE THEREOF; AND (3) AN AMINE ACETATE HAVING AN ALKYL GROUP CONTAINING FROM 8 TO 22 CARBON ATOMS, FROTH FLOATING THE ORE, AND COLLECTING THE MICA CONTAINING FROTH.
References Cited (Backward Citations)
US2132902A
Cited
US2337118A
Cited
US2303962A
Cited
DE738614C
Cited
US2578790A
Cited
US2857051A
Cited
US3214018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |