Patent US6249809B1 successfully refreshed from Google Patents.
Patent US2544564A successfully refreshed from Google Patents.
US2544564A
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Method of preventing foaming of aqueous absorption liquids when employed in the removal of acid constituents present in gaseous mixtures
Assignee: Phillips Petroleum Co
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Filing: 1948-01-02
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Granted: 1951-03-06
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Expires: 1968-01-02
Abstract
No abstract record available.
Inventors
- 👤 Ivan A Peterson
- 👤 Jr Everett S Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:40
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526; B01D53/523; C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/14; C10K1/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A PROCESS FOR REMOVING ACIDIC CONSTITUENTS FROM A GASEOUS MIXTURE BY ACTION OF AN AQUEOUS SOLUTION OF AN ETHANOLAMINE, THE IMPROVEMENT WHICH COMPRISES PREVENTING FORMING BY ADDING TO SAID AQUEOUS AMINE A SOLUTION OF STEARYL ALCOHOL IN ISOPROPYL ALCOHOL, SAID SOLUTION OF STEARYL ALCOHOL COMPRISING STEARYL ALCOHOL IN AN AMOUNT FROM ABOUT 10 PER CENT TO ABOUT 60 PER CENT ON A WEIGHT OF BASIS AND THE REMAINDER ISOPROPYL ALCOHOL, SAID SOLUTION OF ALCOHOL BEING ADDED TO SAID AQUEOUS SOLUTION IN AN AMOUNT TO PROVIDE A CONCENTRATION OF STEARYL ALCOHOL THEREIN IN THE RANGE OF 5 TO 20 PARTS PER MILLION PARTS ETHANOLAMINE.
Claim 2
Dependent Claim
104 words
IN A PROCESS FOR REMOVING ACIDIC CONSTITUENTS FROM A GASEOUS MIXTURE BY ACTION OF AN AQUEOUS SOLUTION OF AN ETHANOLAMINE, THE IMPROVEMENT WHICH COMPRISES PREVENTING FORMING BY ADDING TO SAID AQUEOUS AMINE A SOLUTION OF STEARYL ALCOHOL IN ISOPROPYL ALCOHOL, SAID SOLUTION OF STEARYL ALCOHOL COMPRISING STEARYL ALCOHOL IN AN AMOUNT FROM ABOUT 10 PER CENT TO ABOUT 60 PER CENT ON A WEIGHT OF BASIS AND THE REMAINDER ISOPROPYL ALCOHOL, SAID SOLUTION OF ALCOHOL BEING ADDED TO SAID AQUEOUS SOLUTION IN AN AMOUNT TO PROVIDE A CONCENTRATION OF STEARYL ALCOHOL THEREIN IN THE RANGE OF 5 TO 20 PARTS PER MILLION PARTS ETHANOLAMINE.
References Cited (Backward Citations)
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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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |