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US2762852A
Expired / Lapsed
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Adsorption process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-04-29
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Granted: 1956-09-11
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Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 James B Litton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:31
CPC Classifications
C; C10; C10G; C10G25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
IN A METHOD FOR SEPARATING A HYDROCARBON FEED CHARGE MIXTURE IN THE GASOLINE TO LUBRICATING OIL BOILING RANGE COMPRISING AT LEAST TWO HYDROCARBON COMPONENTS OF DIFFERENT ABSORPTIVE CHARACTHERISTICS WHICH COMPRISES CONTACTING SAID MIXTURE WITH A POROUS ADSORBENT UNDER ADSORPTION CONDITIONS TO ABSORB PERFERENTIALLY ONE OF SAID COMPONENTS ON SAID POROUS ADSORBENT AND THEN DESORBING SAID OBSORBED COMPONENT FROM SAID POROUS ADSORBENT BY CONTACTING SAID POROUS ABSORBENT CONTAINING SAID ADSORBED COMPONENT UNDER DESORPTION CONDITIONS WITH AN ORGANIC DESORBING AGENT CHARGE, SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ALCOHOLS HAVING FROM 1 TO 5 CARBON ATOMS AND PETROLEUM FRACTIONS IN THE GASOLINE TO LUBRICATING OIL BOILING RANGE HAVING A BOILING POINT DIFFERENT FROM THAT OF THE FEED HYDROCARBON, THE IMPROVEMENT WHICH COMPRISIES INCLUDING A SMALL BUT EFFECTIVE AMOUNT OF A SURFACE ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF THE PARTIAL ESTERS AND ESTER-ETHER COMPLEXES OF POLYHYDROXY ALCOHOLS, ALKYLENE OXIDES, AND C10-C22 MONOCARBOXYLIC ACIDS, THE ALKANE SULFONIC ACIDS, ALKYL AROMATIC SULFONIC ACIDS, AND SALTS OF THE ALKANE AND ALKYL AROMATIC SULFONIC ACIDS SOLUBLE IN AT LEAST ONE OF SAID CHARGES CONTACTING SAID ADSORBENT.
Claim 2
Dependent Claim
181 words
IN A METHOD FOR SEPARATING A HYDROCARBON FEED CHARGE MIXTURE IN THE GASOLINE TO LUBRICATING OIL BOILING RANGE COMPRISING AT LEAST TWO HYDROCARBON COMPONENTS OF DIFFERENT ABSORPTIVE CHARACTHERISTICS WHICH COMPRISES CONTACTING SAID MIXTURE WITH A POROUS ADSORBENT UNDER ADSORPTION CONDITIONS TO ABSORB PERFERENTIALLY ONE OF SAID COMPONENTS ON SAID POROUS ADSORBENT AND THEN DESORBING SAID OBSORBED COMPONENT FROM SAID POROUS ADSORBENT BY CONTACTING SAID POROUS ABSORBENT CONTAINING SAID ADSORBED COMPONENT UNDER DESORPTION CONDITIONS WITH AN ORGANIC DESORBING AGENT CHARGE, SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ALCOHOLS HAVING FROM 1 TO 5 CARBON ATOMS AND PETROLEUM FRACTIONS IN THE GASOLINE TO LUBRICATING OIL BOILING RANGE HAVING A BOILING POINT DIFFERENT FROM THAT OF THE FEED HYDROCARBON, THE IMPROVEMENT WHICH COMPRISIES INCLUDING A SMALL BUT EFFECTIVE AMOUNT OF A SURFACE ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF THE PARTIAL ESTERS AND ESTER-ETHER COMPLEXES OF POLYHYDROXY ALCOHOLS, ALKYLENE OXIDES, AND C10-C22 MONOCARBOXYLIC ACIDS, THE ALKANE SULFONIC ACIDS, ALKYL AROMATIC SULFONIC ACIDS, AND SALTS OF THE ALKANE AND ALKYL AROMATIC SULFONIC ACIDS SOLUBLE IN AT LEAST ONE OF SAID CHARGES CONTACTING SAID ADSORBENT.
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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |