Patent US3753892A successfully refreshed from Google Patents.
US3753892A
Expired / Lapsed
US
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Hydrocarbon-hydrogen separation method
Assignee: Universal Oil Products Co
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Filing: 1971-05-27
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Granted: 1973-08-21
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Expires: 1991-05-27
Abstract
Abstract IN A PROCESS FOR THE SEPARATION OF HYDROGEN, NORMALLY GASEOUS HYDROCARBONS AND NORMALLY LIQUID HYDROCARBONS FROM A HYDROCARBON CONVERSION ZONE EFFLUENT WHEREIN THE EFFLUENT IS FIRST SEPARATED IN A FIRST SEPARATION ZONE TO PRODUCE A HYDROCARBON PHASE AND A LIQUID PHASE AND THE LIQUID PHASE IS SUBSEQUENTLY SEPARTED TO PRODUCE A NORMALLY LIQUID STREAM, A C1-C4 GASEOUS STREAM AND A LIQUID C3-C4 (LPG) STREAM, THE RECOVERY OF C3-C4 HYDROCARBONS, AS LIQUID, IS INCREASED BY PASSING A PORTION OF THE C1-C4 STREAM TO THE FIRST SEPARATION ZONE.
Inventors
- 👤 J Weith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:16
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G49/00; C10G49/22
Claims Analysis
Total Claims: 0
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |