Patent US2641572A successfully refreshed from Google Patents.
US2641572A
Expired / Lapsed
US
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Dethiolizing hydrocarbons
Assignee: Texaco Inc
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Filing: 1951-11-30
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Granted: 1953-06-09
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Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 James L Meadows
- 👤 Robert H Howell
- 👤 Ambrose J Startz
- 👤 Gordon H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:26
CPC Classifications
C; C10; C10G; C10G19/00; C10G29/00; C10G29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE PROCESS OF DETHIOLIZING HYDROCARBONS THAT COMPRISES CONTACTING THE HYDROCARBONS IN A DETHIOLIZING ZONE WITH A SOLUTION OF ALKALI METAL HYDROXIDE AND GLYCOL ETHER TO EFFECT REMOVAL OF MERCAPTANS, REGENERATING THE USED TREATING SOLUTION IN A REGENERATING ZONE, MAINTAINING A CYCLIC FLOW OF TREATING THE SOLUTION AS BETWEEN THE DETHIOLIZING ZONE AND THE REGENERATING ZONE, WITHDRAWING FROM THE DETHIOLIZING-REGENERATING CYCLE PORTION OF THE TREATING SOLUTION AND CONTACTING IT WITH HYDROCARBON CHARGING STOCK FLOWING TO THE SYSTEM TO THEREBY LEACH THE GLYCOL ETHER FROM THE TREATING SOLUTION AND WITHDRAWING THE SEPARATED ALKALINE MATERIAL FROM THE SYSTEM.
Claim 2
Dependent Claim
95 words
THE PROCESS OF DETHIOLIZING HYDROCARBONS THAT COMPRISES CONTACTING THE HYDROCARBONS IN A DETHIOLIZING ZONE WITH A SOLUTION OF ALKALI METAL HYDROXIDE AND GLYCOL ETHER TO EFFECT REMOVAL OF MERCAPTANS, REGENERATING THE USED TREATING SOLUTION IN A REGENERATING ZONE, MAINTAINING A CYCLIC FLOW OF TREATING THE SOLUTION AS BETWEEN THE DETHIOLIZING ZONE AND THE REGENERATING ZONE, WITHDRAWING FROM THE DETHIOLIZING-REGENERATING CYCLE PORTION OF THE TREATING SOLUTION AND CONTACTING IT WITH HYDROCARBON CHARGING STOCK FLOWING TO THE SYSTEM TO THEREBY LEACH THE GLYCOL ETHER FROM THE TREATING SOLUTION AND WITHDRAWING THE SEPARATED ALKALINE MATERIAL FROM THE SYSTEM.
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |