Patent US3034985A successfully refreshed from Google Patents.
US3034985A
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Amine flotation reagent preparation
Assignee: Potash Corp of Saskatchewan Inc
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Filing: 1961-09-08
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Granted: 1962-05-15
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Expires: 1981-09-08
Abstract
No abstract record available.
Inventors
- 👤 Edmund A Schoeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:51
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A PROCESS FOR PREPARING A LIQUEFIED AMINE COLLECTOR REAGENT FOR FLOTATION SEPERATIONS, THE STEPS OF MELTING A MINOR QUANTITY OF A NORMALLY SOLID, HIGH MOLECULAR WEIGHT ALIPHATIC AMINE COMPOSITION IN A MAJOR QUANTITY OF WATER, AND THEEN INTRODUCING INTO THE RESULTANT LIQUOR A SUFICIENT AMOUNT OF AN ACID TO REACT WITH NOT MORE THAN A STOICHIOMETRIC AMOUNT OF THE AMINE PRESENT IN THE LIQUOR, AND FORMING THEREWITH A WATER SOLUBLE SALT OF THE AMINE WHEREBY TO FORM A STABILIZED AQUEOUS AMINE COMPOSITION CONTAINING AT LEAST ABOUT 1% BY WEIGHT OF THE AMINE COMPOSITION.
Claim 2
Dependent Claim
94 words
IN A PROCESS FOR PREPARING A LIQUEFIED AMINE COLLECTOR REAGENT FOR FLOTATION SEPERATIONS, THE STEPS OF MELTING A MINOR QUANTITY OF A NORMALLY SOLID, HIGH MOLECULAR WEIGHT ALIPHATIC AMINE COMPOSITION IN A MAJOR QUANTITY OF WATER, AND THEEN INTRODUCING INTO THE RESULTANT LIQUOR A SUFICIENT AMOUNT OF AN ACID TO REACT WITH NOT MORE THAN A STOICHIOMETRIC AMOUNT OF THE AMINE PRESENT IN THE LIQUOR, AND FORMING THEREWITH A WATER SOLUBLE SALT OF THE AMINE WHEREBY TO FORM A STABILIZED AQUEOUS AMINE COMPOSITION CONTAINING AT LEAST ABOUT 1% BY WEIGHT OF THE AMINE COMPOSITION.
References Cited (Backward Citations)
FR1096459A
Cited
US2816870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |