Patent US3189408A successfully refreshed from Google Patents.
US3189408A
Expired / Lapsed
US
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Method of producing soda ash from trona
Assignee: Intermountain Research and Development Corp
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Filing: 1961-09-25
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Granted: 1965-06-15
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Miller Warren Standish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:11
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/12; C01D7/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF PRODUCING REFINED SODA ASH FROM CRUDE TRONA WHICH COMPRISES DISSOLVING THE SOLUBLE CONSTITUENT OF MATERIALS FROM THE GROUP CONSISTING OF CRUDE TRONA AND CALCINED CURDE TRONA TO FORM A SOLUTION THEREOF, SEPARATING THE INSOLUBLE MATERIAL FROM SAID SOLUTION, EVAPORATING THE SOLUTION TO PRODUCE SODIUM CARBONATE CONTAINING CRYSTALS THEREIN, MIXING A SLURRY OF SAID CRYSTALS AND SAID SOLUTION WITH HOT SODA ASH TO SUBSTANTIALLY ABSORB SAID SOLUTION AND CALCINING THE MXTUE THUS PRODUCED TO SODA ASH.
Claim 2
Independent Claim
78 words
THE METHOD OF PRODUCING REFINED SODA ASH FROM CRUDE TRONA WHICH COMPRISES DISSOLVING THE SOLUBLE CONSTITUENT OF MATERIALS FROM THE GROUP CONSISTING OF CRUDE TRONA AND CALCINED CURDE TRONA TO FORM A SOLUTION THEREOF, SEPARATING THE INSOLUBLE MATERIAL FROM SAID SOLUTION, EVAPORATING THE SOLUTION TO PRODUCE SODIUM CARBONATE CONTAINING CRYSTALS THEREIN, MIXING A SLURRY OF SAID CRYSTALS AND SAID SOLUTION WITH HOT SODA ASH TO SUBSTANTIALLY ABSORB SAID SOLUTION AND CALCINING THE MXTUE THUS PRODUCED TO SODA ASH.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |