US2798790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sodium sesquicarbonate
Assignee: Individual
•
Filing: 1954-02-01
•
Granted: 1957-07-09
•
Expires: 1974-02-01
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 19:57
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A CYCLIC PROCESS FOR PRODUCING REFINED SESQUICARBONATE FROM WYOMING TRONA WHICH COMPRISES FORMING A HOT CLARIFIED SUBSTANTIALLY SATURATED SOLUTION OF TRONA IN WATERR FROM WHICH SODIUM SESQUICARBONATE WILL NOT CRYSTALLIZE ONN COOLING, MIXING RECYCLED SODIUM CARBONATE MONOHYDRATE SLURRY WITH SAID SATURATED SOLUTION OF TRONA IN WATER TO CONVERT IT INTO A SOLUTION FROM WHICH SODIDUM SESQUICARBONATE WILL CRYSTALLIZE ON COOLING, COOLING THE SOLUTION SLOWLY TO PRODUCE SUBSTANTIALLY ONLY CRYSTALS OF SODIUMM SESQUICARBONATE, REMOVING THE FORMED CRYSTALS, EVAPORATING THE MOTHER LIQUOR TO REMOVE THE ADDED WATER THEREFROM AND AGAIN PRODUCE A SLURRY CONTAINING CRYSTALS OF
Claim 2
Dependent Claim
94 words
A CYCLIC PROCESS FOR PRODUCING REFINED SESQUICARBONATE FROM WYOMING TRONA WHICH COMPRISES FORMING A HOT CLARIFIED SUBSTANTIALLY SATURATED SOLUTION OF TRONA IN WATERR FROM WHICH SODIUM SESQUICARBONATE WILL NOT CRYSTALLIZE ONN COOLING, MIXING RECYCLED SODIUM CARBONATE MONOHYDRATE SLURRY WITH SAID SATURATED SOLUTION OF TRONA IN WATER TO CONVERT IT INTO A SOLUTION FROM WHICH SODIDUM SESQUICARBONATE WILL CRYSTALLIZE ON COOLING, COOLING THE SOLUTION SLOWLY TO PRODUCE SUBSTANTIALLY ONLY CRYSTALS OF SODIUMM SESQUICARBONATE, REMOVING THE FORMED CRYSTALS, EVAPORATING THE MOTHER LIQUOR TO REMOVE THE ADDED WATER THEREFROM AND AGAIN PRODUCE A SLURRY CONTAINING CRYSTALS OF
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) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |