US2966394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing ammonium sulfate
Assignee: Beazer East Inc
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Filing: 1957-08-21
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Granted: 1960-12-27
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Expires: 1977-08-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph Van Ackeren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:23
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/24; C01C1/242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR RECOVERING THE AMMONIA FROM COKE OVEN GAS AS LARGE CRYSTALS OF AMMONIUM SULFATE WHICH COMPRISES CONTACTING THE GAS IN A SCRUBBING ZONE WITH A SOLUTION WHICH CONTAINS SULFURIC ACID AND IS UNSATURATED AS TO ITS CONCENTRATION OF AMMONIUM SULFATE TO ABSORB SUBSTANTIALLY ALL OF THE AMMONIA FROM SAID GAS, THERE AFTER CONTACTING SAID SUBSTANTIALLY AMMONIA FREE GAS IN AN EVAPORATING ZONE WITH A HEATED SOLUTION OF AMMONIUM SULFATE TO REMOVE WATER FROM SAID HEATED SOLUTION TO INCREASE THE CONCENTRATION OF AMMONIUM SULFATE THEREIN
Claim 2
Dependent Claim
86 words
A PROCESS FOR RECOVERING THE AMMONIA FROM COKE OVEN GAS AS LARGE CRYSTALS OF AMMONIUM SULFATE WHICH COMPRISES CONTACTING THE GAS IN A SCRUBBING ZONE WITH A SOLUTION WHICH CONTAINS SULFURIC ACID AND IS UNSATURATED AS TO ITS CONCENTRATION OF AMMONIUM SULFATE TO ABSORB SUBSTANTIALLY ALL OF THE AMMONIA FROM SAID GAS, THERE AFTER CONTACTING SAID SUBSTANTIALLY AMMONIA FREE GAS IN AN EVAPORATING ZONE WITH A HEATED SOLUTION OF AMMONIUM SULFATE TO REMOVE WATER FROM SAID HEATED SOLUTION TO INCREASE THE CONCENTRATION OF AMMONIUM SULFATE THEREIN
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) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |