US2645602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening hydrocarbon distillates
Assignee: Standard Oil Co
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Filing: 1950-03-17
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Granted: 1953-07-14
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Expires: 1970-03-17
Abstract
No abstract record available.
Inventors
- 👤 Theodore B Tom
- 👤 Jack H Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:23
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
THE PROCESS OF REMOVING MERCAPTANS FROM A SOUR HYDROCARBON DISTILLATE BOILING ABOVE THE GASOLINE RANGE WITHOUT FORMATION OF EXCESSIVE COLOR THEREIN, WHICH COMPRISES INTIMATELY CONTACTING SAID DISTILLATE WITH ABOUT 1 TO 15 PERCENT BY VOLUME OF AN AQUEOUS SOLUTION OF KOH HAVING A CONCENTRATION OF ABOUT 50 TO 60 WEIGHT PERCENT, INTRODUCING A GAS CONTAINING AN AMOUNT OF FREE OXYGEN ABOUT STOICHIOMETRICALLY EQUIVALENT TO THE AMOUNT OF MERCAPTANS PRESENT IN SAID DISTILLATE INTO THE MIXTURE OF DISTILLATE AND KOH MAINTAINING THE TEMPERATURE OF CONTACTING AT ABOUT 100 TO 125* F. UNTIL THERE HAS BEEN A SUBSTANTIAL REDUCTION IN MERCAPTAN CONTENT AND SEPARATING SPENT KOH SOLUTION AND ASSOCIATED REACTION PRODUCTS FROM THE TREATED OIL.
Claim 2
Dependent Claim
113 words
THE PROCESS OF REMOVING MERCAPTANS FROM A SOUR HYDROCARBON DISTILLATE BOILING ABOVE THE GASOLINE RANGE WITHOUT FORMATION OF EXCESSIVE COLOR THEREIN, WHICH COMPRISES INTIMATELY CONTACTING SAID DISTILLATE WITH ABOUT 1 TO 15 PERCENT BY VOLUME OF AN AQUEOUS SOLUTION OF KOH HAVING A CONCENTRATION OF ABOUT 50 TO 60 WEIGHT PERCENT, INTRODUCING A GAS CONTAINING AN AMOUNT OF FREE OXYGEN ABOUT STOICHIOMETRICALLY EQUIVALENT TO THE AMOUNT OF MERCAPTANS PRESENT IN SAID DISTILLATE INTO THE MIXTURE OF DISTILLATE AND KOH MAINTAINING THE TEMPERATURE OF CONTACTING AT ABOUT 100 TO 125* F. UNTIL THERE HAS BEEN A SUBSTANTIAL REDUCTION IN MERCAPTAN CONTENT AND SEPARATING SPENT KOH SOLUTION AND ASSOCIATED REACTION PRODUCTS FROM THE TREATED OIL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |