US2586889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of straight-chain from branched-chain hydrocarbons
Assignee: Standard Oil Development Co
•
Filing: 1949-08-23
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Granted: 1952-02-26
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Expires: 1969-08-23
Abstract
No abstract record available.
Inventors
- 👤 Hans G Vesterdal
- 👤 William A Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:53
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/003; C01; C01B; C01B32/00; C01B32/30; C01B32/306; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
PROCESS FOR THE SEPARATION OF A NORMALLY LIQUID STRAIGHT-CHAIN HYDROCARBON FROM A MIXTURE THEREOF WITH AT LEAST ONE HYDROCARBON SELECTED FROM THE GROUP COMSISTING OF NORMALLY LIQUID BRANCHED-CHAIN ALIPHATIC HYDROCARBONS AND CYCLIC HYDROCARBONS WHICH COMPRISES CONTACTING SAID MIXTURE WITH AN ACTIVATED CARBON PREPARED BY TREATING ACID SLUDGE COKE WITH STEAM AT A TEMPERATURE OF 1350-1500* F. UNTIL A YIELD OF 70-90 WEIGHT PER CENT OF ACTIVATED CARBON BASED ON THE WEIGHT OF ACID SLUDGE COKE IS OBTAINED WHEREBY THE STRAIGHT-CHAIN HYDROCARBON IS PREFERENTIALLY ADSORBED ON THE ACTIVATED CARBON.
Claim 2
Dependent Claim
44 words
AN ACTIVATED CARBON PREPARED BY PASSING STEAM THROUGH ACID SLUDGE COKE AT A TEMPERATURE OF 1350* F. TO 1500* F. UNTIL A YIELD OF 70 TO 90 WEIGHT PER CENT OF ACTIVATED CARBON BASED ON THE WEIGHT OF THE ACID SLUDGE COKE IS OBTAINED.
References Cited (Backward Citations)
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Cited
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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) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |