Patent US2912301A successfully refreshed from Google Patents.
US2912301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing acidic components from gaseous mixtures
Assignee: MW Kellogg Co
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Filing: 1956-10-18
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Granted: 1959-11-10
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Expires: 1976-10-18
Abstract
No abstract record available.
Inventors
- 👤 Warren C Schreiner
- 👤 Jr Nicholas Walen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:54
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1456
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A LIQUID-VAPOR ABSORPTION PROCESS IN WHICH A GASEOUS MIXTURE IS CONTACTED WITH AN ABSORBENT COMPRISING A SOLUTION OF AN ALKALI METAL CARBONATE FOR THE ABSORPTION OF ACIDIC COMPONENTS FROM SAID MIXTURE, IN WHICH THE RATIO OF LIQUID TO VAPOR IS GREATER THAN ABOUT 15 GALLONS OF ABSORBENT PER MOLE OF VAPOR DURING A FIRST PORTION OF A LIQUID-VAPOR ABSORPTION STEP AND IN WHICH THE LIQUID TO VAPOR RATIO IS LESS THAN ABOUT 10 GALLONS OF ABSORBENT PER MOLE OF VAPOR DURING A SECOND PORTION OF SAID ABSORPTION STEP AND IN WHICH SAID FIRST AND SECOND PORTIONS OF THE ABSORPTION STEP ARE CONDUCTED WITHIN A UNITARY VESSEL, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID FIRST PORTION OF SAID ABSORPTION STEP IN AN ABSORPTION ZONE CONTAINING PACKING AND CARRYING OUT SAID SECOND PORTION OF SAID ABSORPTION STEP IN AN ABSORPTION ZONE CONTAINING BUBBLE TRAYS.
Claim 2
Dependent Claim
143 words
IN A LIQUID-VAPOR ABSORPTION PROCESS IN WHICH A GASEOUS MIXTURE IS CONTACTED WITH AN ABSORBENT COMPRISING A SOLUTION OF AN ALKALI METAL CARBONATE FOR THE ABSORPTION OF ACIDIC COMPONENTS FROM SAID MIXTURE, IN WHICH THE RATIO OF LIQUID TO VAPOR IS GREATER THAN ABOUT 15 GALLONS OF ABSORBENT PER MOLE OF VAPOR DURING A FIRST PORTION OF A LIQUID-VAPOR ABSORPTION STEP AND IN WHICH THE LIQUID TO VAPOR RATIO IS LESS THAN ABOUT 10 GALLONS OF ABSORBENT PER MOLE OF VAPOR DURING A SECOND PORTION OF SAID ABSORPTION STEP AND IN WHICH SAID FIRST AND SECOND PORTIONS OF THE ABSORPTION STEP ARE CONDUCTED WITHIN A UNITARY VESSEL, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID FIRST PORTION OF SAID ABSORPTION STEP IN AN ABSORPTION ZONE CONTAINING PACKING AND CARRYING OUT SAID SECOND PORTION OF SAID ABSORPTION STEP IN AN ABSORPTION ZONE CONTAINING BUBBLE TRAYS.
References Cited (Backward Citations)
US2615787A
Cited
GB725000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |