US2704239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sodium bicarbonate and soda ash from trona
Assignee: Individual
•
Filing: 1951-06-01
•
Granted: 1955-03-15
•
Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
- 👤 Robert D Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A RECYCLING SYSTEM FOR THE PRODUCTION OF SODIUM BICARBONATE FROM CRUDE TRONA BY CRYSTALLIZATION OF SODIUM BICARBONATE FROM AN AQUEOUS SOLUTION OF TRONA WHICH COMPRISES DISSOLVING CRUDE TRONA LIN AN UNSATURATED AQUEOUS MOTHER SOLUTION OF SODIUM CARBONATE AND SODIUM BICARBONATE COMPOSED PRINCIPALLY OF A RECYCLED SOLUTION OF SODIUM CARBONATE AND SODIUM BICARBONATE AT A TEMPERATURE BELOW ABOUT 20 AND 100* C., THE PROPORTION OF SODIUM BICARBONATE TO SODIUM CARBONATE IN SAID MOTHER SOLUTION AT EQUILIBRIUM RANGING BY WEIGHT FROM AT LEAST ABOUT 4.6:20 AT 20* C. TO A T LAST ABOUT 18:16 AT 100* C., ADDING CO2 TO THE SYSTEM DURING EACH CYCLE IN AN AMOUNT SUBSTANTIALLY EQUAL TO THE AMOUNT NECESSARY TO CONVERT THE SODIUM CARBONATE OF THE TRONA DISSOLVED DURING SAID CYCLE INTO SODIUM BICARBONATE AND TO MAINTAIN THE RECYCLING AQUEOUS SOLUTION OF SAID CYCLE CONTAINING THE DISSOLVED TRONA IN A CONCENTRATION WITHIN THE
Claim 2
Dependent Claim
146 words
A RECYCLING SYSTEM FOR THE PRODUCTION OF SODIUM BICARBONATE FROM CRUDE TRONA BY CRYSTALLIZATION OF SODIUM BICARBONATE FROM AN AQUEOUS SOLUTION OF TRONA WHICH COMPRISES DISSOLVING CRUDE TRONA LIN AN UNSATURATED AQUEOUS MOTHER SOLUTION OF SODIUM CARBONATE AND SODIUM BICARBONATE COMPOSED PRINCIPALLY OF A RECYCLED SOLUTION OF SODIUM CARBONATE AND SODIUM BICARBONATE AT A TEMPERATURE BELOW ABOUT 20 AND 100* C., THE PROPORTION OF SODIUM BICARBONATE TO SODIUM CARBONATE IN SAID MOTHER SOLUTION AT EQUILIBRIUM RANGING BY WEIGHT FROM AT LEAST ABOUT 4.6:20 AT 20* C. TO A T LAST ABOUT 18:16 AT 100* C., ADDING CO2 TO THE SYSTEM DURING EACH CYCLE IN AN AMOUNT SUBSTANTIALLY EQUAL TO THE AMOUNT NECESSARY TO CONVERT THE SODIUM CARBONATE OF THE TRONA DISSOLVED DURING SAID CYCLE INTO SODIUM BICARBONATE AND TO MAINTAIN THE RECYCLING AQUEOUS SOLUTION OF SAID CYCLE CONTAINING THE DISSOLVED TRONA IN A CONCENTRATION WITHIN THE
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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) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |