Patent US3246962A successfully refreshed from Google Patents.
US3246962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dissolving lump trona in a descending aqueous film
Assignee: Intermountain Research and Development Corp
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Filing: 1963-03-07
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Granted: 1966-04-19
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Expires: 1983-03-07
Abstract
No abstract record available.
Inventors
- 👤 Miller Warren Standish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:14
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/12; C01D7/22; C01D7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR DISSOLVING CRUDE MINE-RUN TRONA IN A LEACHING OPERATION TO PRODUCE AQUEOUS SOLUTIONS CONTAINING SODIUM CARBONATE VALUES WHICH COMPRISES WETTING THE CRUDE MINE-RUN LUMP TRONA WITH AQUEOUS SOLVENT FLOWING DOWNWARDLY OVER THE CRUDE TRONA LUMPS AND FORMING A FLIM OF SOLUTION THEREON WHEREBY SODIUM SESQUICARBONATE IN THE LUMP TRONA IS DISSOLVED IN THE SAID AQUEOUS FILM, MAINTAINING THE COLUMN AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, PASSING STEAM UPWARDLY THROUGH AND IN DIRECT CONTACT WITH THE WET TRONA LUMPS TO HEAT THE COLUMN AND STRIP CO2 FROM SAID SOLUTION FILM THEREBY FORMING A HEATED AQUEOUS SOLUTION CONTAINING SODIUM CARBOATE VALUES, SEPARATING THE TRONA INSOLUBLE FROM THE SAID AQUEOUS SOLUTION AND RECOVERING THE AQUEOUS SOLUTION CONTAINING SODIUM CARBONATE VALUES.
Claim 2
Dependent Claim
117 words
A PROCESS FOR DISSOLVING CRUDE MINE-RUN TRONA IN A LEACHING OPERATION TO PRODUCE AQUEOUS SOLUTIONS CONTAINING SODIUM CARBONATE VALUES WHICH COMPRISES WETTING THE CRUDE MINE-RUN LUMP TRONA WITH AQUEOUS SOLVENT FLOWING DOWNWARDLY OVER THE CRUDE TRONA LUMPS AND FORMING A FLIM OF SOLUTION THEREON WHEREBY SODIUM SESQUICARBONATE IN THE LUMP TRONA IS DISSOLVED IN THE SAID AQUEOUS FILM, MAINTAINING THE COLUMN AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, PASSING STEAM UPWARDLY THROUGH AND IN DIRECT CONTACT WITH THE WET TRONA LUMPS TO HEAT THE COLUMN AND STRIP CO2 FROM SAID SOLUTION FILM THEREBY FORMING A HEATED AQUEOUS SOLUTION CONTAINING SODIUM CARBOATE VALUES, SEPARATING THE TRONA INSOLUBLE FROM THE SAID AQUEOUS SOLUTION AND RECOVERING THE AQUEOUS SOLUTION CONTAINING SODIUM CARBONATE VALUES.
References Cited (Backward Citations)
US2009667A
Cited
US2133455A
Cited
US2120287A
Cited
US2346140A
Cited
US2792282A
Cited
US3119655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |