Patent US2942942A successfully refreshed from Google Patents.
US2942942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for producing sodium bicarbonate slurry
Assignee: Wyandotte Chemicals Corp
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Filing: 1957-11-01
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Granted: 1960-06-28
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Expires: 1977-11-01
Abstract
No abstract record available.
Inventors
- 👤 Jean M Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:43
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A CONTINUOUS PROCESS FOR PRODUCING A SLURRY OF SODIUM BICARBONATE BY BUBBLING A GAS CONSISTING ESSENTIALLY OF CARBON DIOXIDE THROUGH AMMONIATED BRINE, WHICH COMPRISES FLOWING AMMONIATED BRINE DOWNWARDLY AS A STREAM THROUGH A CARBONATING TOWER WHILE INTRODUCING SAID GAS UNDER PRESSURE INTO A LOWER PORTION OF SAID TOWER, INTRODUCING AT THE TOP OF SAID TOWER A WATER-IMMISICIBLE, INERT, LIQUID HYDROCARBON HEAT TRANSFER AGENT AND PASSING SAID HEAT TRANSFER AGENT THROUGH SAID TOWER IN ADMIXTURE WITH SAID AMMONIATED BRINE WHEREBY RELEASED HEAT OF REACTION IS, ABSORBED BY SAID AGENT, DISCHARGING SAID AGENT ALONG WITH THE SLURRY OF SODUIM BICARBONATE SAID AGENT ALONG TOWER, SEPARATING SAID AGENT FROM SAID SLURRY, REMOVING HEAT FROM SAID AGENT, AND RETURNING SAID AGENT TO THE TOP OF SAID TOWER.
Claim 2
Dependent Claim
123 words
A CONTINUOUS PROCESS FOR PRODUCING A SLURRY OF SODIUM BICARBONATE BY BUBBLING A GAS CONSISTING ESSENTIALLY OF CARBON DIOXIDE THROUGH AMMONIATED BRINE, WHICH COMPRISES FLOWING AMMONIATED BRINE DOWNWARDLY AS A STREAM THROUGH A CARBONATING TOWER WHILE INTRODUCING SAID GAS UNDER PRESSURE INTO A LOWER PORTION OF SAID TOWER, INTRODUCING AT THE TOP OF SAID TOWER A WATER-IMMISICIBLE, INERT, LIQUID HYDROCARBON HEAT TRANSFER AGENT AND PASSING SAID HEAT TRANSFER AGENT THROUGH SAID TOWER IN ADMIXTURE WITH SAID AMMONIATED BRINE WHEREBY RELEASED HEAT OF REACTION IS, ABSORBED BY SAID AGENT, DISCHARGING SAID AGENT ALONG WITH THE SLURRY OF SODUIM BICARBONATE SAID AGENT ALONG TOWER, SEPARATING SAID AGENT FROM SAID SLURRY, REMOVING HEAT FROM SAID AGENT, AND RETURNING SAID AGENT TO THE TOP OF SAID TOWER.
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |