Patent US2792282A successfully refreshed from Google Patents.
US2792282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing refined soda ash from trona
Assignee: Individual
•
Filing: 1953-02-11
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Granted: 1957-05-14
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Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 Kenneth B Ray
- 👤 Company The Stamford Trust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:28
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR PRODUCING SODA ASH FROM TRONA, WHICH COMPRISES DISSOLVING RAW TRONA AND A LESSER AMOUNT OF CALCINED TRONA IN A CIRCULATING AQUEOUS MOTHER LIQUOR SOLUTION OF SODIUM CARBONATE AND SODIUM BICARBONATE, SAID MOTHER LIQUOR SOLUTION BEING AT ABOUT BOILING TEMPERATURE OF THE SAID SOLUTION, THE NORMAL CARBONATE BEING IN MATERIALLY HIGHER CONCENTRATION THAN THE BICARBONATE IN SAID MOTHER LIQUOR; ADDING MAKE-UP WATER SUFFICIENT TO MAINTAIN THE CIRCULATION, ADDING TO THIS SOLUTION A SLURRY OF SODIUM BICARBONATE CRYSTALS PRODUCED BY CARBONATING A MINOR FRACTION OF THE CIRCULATION MOTHER LIQUOR SOLUTION, PERMITTING THE SODIUM BICARBONATE IN SAID SLURRY TO REACT WITH SODIUM CARBONATE AND WATER TO PRODUCE SESQUICARBONATE, FEEDING THE ENTIRE STREAM CONTAIN-
Claim 2
Dependent Claim
113 words
A PROCESS FOR PRODUCING SODA ASH FROM TRONA, WHICH COMPRISES DISSOLVING RAW TRONA AND A LESSER AMOUNT OF CALCINED TRONA IN A CIRCULATING AQUEOUS MOTHER LIQUOR SOLUTION OF SODIUM CARBONATE AND SODIUM BICARBONATE, SAID MOTHER LIQUOR SOLUTION BEING AT ABOUT BOILING TEMPERATURE OF THE SAID SOLUTION, THE NORMAL CARBONATE BEING IN MATERIALLY HIGHER CONCENTRATION THAN THE BICARBONATE IN SAID MOTHER LIQUOR; ADDING MAKE-UP WATER SUFFICIENT TO MAINTAIN THE CIRCULATION, ADDING TO THIS SOLUTION A SLURRY OF SODIUM BICARBONATE CRYSTALS PRODUCED BY CARBONATING A MINOR FRACTION OF THE CIRCULATION MOTHER LIQUOR SOLUTION, PERMITTING THE SODIUM BICARBONATE IN SAID SLURRY TO REACT WITH SODIUM CARBONATE AND WATER TO PRODUCE SESQUICARBONATE, FEEDING THE ENTIRE STREAM CONTAIN-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |