Patent US2290812A successfully refreshed from Google Patents.
Patent US2880254A successfully refreshed from Google Patents.
US2880254A
Expired / Lapsed
US
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Desoxycholic acid as a separating agent
Assignee: Universal Oil Products Co
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Filing: 1956-10-04
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Granted: 1959-03-31
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Expires: 1976-10-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:49
CPC Classifications
C; C07; C07C; C07C9/00; C07C9/14; C10; C10G; C10G17/00; C10G17/02; C10G25/00; C10G25/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR SEPARATING A ATRAIGHT CHAIN ALIPHATIC HYDROCARBON OF FROM 4 TO ABOUT 20 CARBON ATOMS PER MOLECULE FROM A MIXTURE THEREOF WITH AT LEAST ONE OTHER HYDROCARBON COMPONENT SELECTED FROM THE GROUP CONSISTING OF BRANCHED CHAIN ALIPHATIC HYDROCARBONS AND CYCLIC HYDROCARBONS, WHICH COMPRISES CONTACTING SAID MIXTURE WITH DESOXYCHOLIC ACID MAINTAINED IN SOLID PHASES AT A TEMPERATURE OF FROM ABOUT 0* TO ABOUT 120*C. TO SELECTIVELY RETAIN THE STRAIGHT CHAIN HYDROCARBON IN SAID ACID WHILE REJECTING SAID OTHER HYDROCARBON COMPONENT IN A RAFFINATE PHASE, AND SEPARATING THE RAFFINATE PHASE FROM STHE COMBINATION OF THE DESOXYCHOLIC ACID WITH THE STRAIGHT CHAIN HYDROCARBON.
Claim 2
Dependent Claim
102 words
A PROCESS FOR SEPARATING A ATRAIGHT CHAIN ALIPHATIC HYDROCARBON OF FROM 4 TO ABOUT 20 CARBON ATOMS PER MOLECULE FROM A MIXTURE THEREOF WITH AT LEAST ONE OTHER HYDROCARBON COMPONENT SELECTED FROM THE GROUP CONSISTING OF BRANCHED CHAIN ALIPHATIC HYDROCARBONS AND CYCLIC HYDROCARBONS, WHICH COMPRISES CONTACTING SAID MIXTURE WITH DESOXYCHOLIC ACID MAINTAINED IN SOLID PHASES AT A TEMPERATURE OF FROM ABOUT 0* TO ABOUT 120*C. TO SELECTIVELY RETAIN THE STRAIGHT CHAIN HYDROCARBON IN SAID ACID WHILE REJECTING SAID OTHER HYDROCARBON COMPONENT IN A RAFFINATE PHASE, AND SEPARATING THE RAFFINATE PHASE FROM STHE COMBINATION OF THE DESOXYCHOLIC ACID WITH THE STRAIGHT CHAIN HYDROCARBON.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |