Patent US3353672A successfully refreshed from Google Patents.
US3353672A
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Froth flotation reagent
Assignee: International Minerals and Chemical Corp
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Filing: 1964-05-21
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Granted: 1967-11-21
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Expires: 1984-05-21
Abstract
No abstract record available.
Inventors
- 👤 Sollin Ingmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:56
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/008; B03D1/006; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN THE BENEFICIATION OF PHOSPHATE ORE CONTAINING SILICEOUS GANGUE AND PHOSPHATE ROCK BY FROTH FLOTATION, THE IMPROVEMENT COMPRISING CONDITONING SAID ORE PRIOR TO FLOTATION AT A PH IN THE RANGE OF 6 TO 9 IN THE PRESENCE OF HYDROCARBON OIL AND 0.4 TO 2.5 LBS. PER TON OF SAID ORE OF A COLLECTOR CONSISTING ESSENTIALLY OF C12 TO C24 HALOGENATED SATURATED FATTY ACIDS HAVING MELTING POINTS IN THE RANGE OF -10*C. TO 40*C.
Claim 2
Dependent Claim
73 words
IN THE BENEFICIATION OF PHOSPHATE ORE CONTAINING SILICEOUS GANGUE AND PHOSPHATE ROCK BY FROTH FLOTATION, THE IMPROVEMENT COMPRISING CONDITONING SAID ORE PRIOR TO FLOTATION AT A PH IN THE RANGE OF 6 TO 9 IN THE PRESENCE OF HYDROCARBON OIL AND 0.4 TO 2.5 LBS. PER TON OF SAID ORE OF A COLLECTOR CONSISTING ESSENTIALLY OF C12 TO C24 HALOGENATED SATURATED FATTY ACIDS HAVING MELTING POINTS IN THE RANGE OF -10*C. TO 40*C.
References Cited (Backward Citations)
US787814A
Cited
US1875062A
Cited
DE695191C
Cited
US2126292A
Cited
GB496938A
Cited
US2827471A
Cited
US3186546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |