US3182017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of naphthenes from hydrocarbon mixtures using 7 a. to 12 a. molecular sieves
Assignee: Union Oil Company of California
•
Filing: 1963-04-05
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Granted: 1965-05-04
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Expires: 1983-04-05
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fieck
- 👤 Carlyle G Wight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:32
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR SEPARATING A FLUID HYDROCARBON MIXTURE COMPRISING NAPHTHENIC AND NON-NAPHTHENIC HYDROCARBONS WHICH COMPRISES: CONTACTING SAID HYDROCARBON MIXTURE WITH A SOLID GRANULAR ABSORBENT COMPRISING A PARTIALLY DEHYDRATED CRYSTALLINE ZEOLITIC METALLO ALUMINO SILICATE HAVING PORES OF SUBSTANTIALLY UNIFORM DIAMETER BETWEEN ABOUT 7 A. AND ABOUT 12 A. WHEREBY THERE IS OBTAINED A RICH ABSORBENT CONTAINING ABSORBED HYDROCARBONS AND AN UNABSORBED FLUID RAFFINAE PRODUCT; AND SEPARATING SAID RICH ABSORBENT FROM SAID UNABSORBED LIQUID RAFFINATE PRODUCT, SAID UNABSORBED LIQUID RAFFINATE PRODUCT BEING SUBSTANTIALLY LEANER IN NON-NAPHTHENIC HYDROCARBONS THAN SAID HYDROCARBON MIXTURE.
Claim 2
Dependent Claim
89 words
A PROCESS FOR SEPARATING A FLUID HYDROCARBON MIXTURE COMPRISING NAPHTHENIC AND NON-NAPHTHENIC HYDROCARBONS WHICH COMPRISES: CONTACTING SAID HYDROCARBON MIXTURE WITH A SOLID GRANULAR ABSORBENT COMPRISING A PARTIALLY DEHYDRATED CRYSTALLINE ZEOLITIC METALLO ALUMINO SILICATE HAVING PORES OF SUBSTANTIALLY UNIFORM DIAMETER BETWEEN ABOUT 7 A. AND ABOUT 12 A. WHEREBY THERE IS OBTAINED A RICH ABSORBENT CONTAINING ABSORBED HYDROCARBONS AND AN UNABSORBED FLUID RAFFINAE PRODUCT; AND SEPARATING SAID RICH ABSORBENT FROM SAID UNABSORBED LIQUID RAFFINATE PRODUCT, SAID UNABSORBED LIQUID RAFFINATE PRODUCT BEING SUBSTANTIALLY LEANER IN NON-NAPHTHENIC HYDROCARBONS THAN SAID HYDROCARBON MIXTURE.
References Cited (Backward Citations)
US2882244A
Cited
US2859256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |