US2525152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for stabilizing gasoline
Assignee: Standard Oil Development Co
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Filing: 1947-09-17
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Granted: 1950-10-10
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Expires: 1967-09-17
Abstract
No abstract record available.
Inventors
- 👤 Barney R Strickland
- 👤 Emil H Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:53
CPC Classifications
C; C10; C10G; C10G19/00; C10G69/00; C10G69/02; C10G69/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
THE PROCESS OF PRODUCING A STABLE CRACKED GASOLINE WHICH CONSISTS OF THE FOLLOWING STEPS: CATALYTICALLY CRACKING A GAS OIL FEED STOCK BOILING ABOVE ABOUT 400*F. CONTAINING MORE THAN ABOUT 0.8% SULFUR, FRACTIONATING THE PRODUCTS OF THE SAID CRACKING STEP AND SEPARATING A DISTILLATE FRACTION BOILING IN THE GASOLINE BOILING RANGE SUBSTANTIALLY FREE OF HYDROGEN SULFIDE BUT CONTAINING SUBSTANTIAL QUANTITIES OF MERCAPTANS, SAID MERCAPTANS CONSISTING PRINCIPALLY OF AROMATIC MERCAPTANS RESULTING FROM THE CRACKING STEP TO THE SUBSTANTIAL EXCLUSION OF ALIPHATIC MERCAPTANS, AND SAID DISTILLATE STOCK CONTAINING BOTH OLEFINS AND DIOLEFINS, THEREAFTER CONTACTING SAID DISTILLATE STOCK WITH AN AQUEOUS ALKALI HYDROXIDE SOLUTION FREE OF OXYGEN, SAID CONTACT BEING CONDUCTED IN THE ABSENCE OF OXYGEN, AND THEREAFTER SEPARATING THE TREATED DISTILLATE STOCK FROM THE SPENT CAUSTIC WHEREBY A GUM STABLE, SUBSTANTIALLY MERCCAPTAN SULFUR FREE GASOLINE IS OBTAINED.
Claim 2
Dependent Claim
134 words
THE PROCESS OF PRODUCING A STABLE CRACKED GASOLINE WHICH CONSISTS OF THE FOLLOWING STEPS: CATALYTICALLY CRACKING A GAS OIL FEED STOCK BOILING ABOVE ABOUT 400*F. CONTAINING MORE THAN ABOUT 0.8% SULFUR, FRACTIONATING THE PRODUCTS OF THE SAID CRACKING STEP AND SEPARATING A DISTILLATE FRACTION BOILING IN THE GASOLINE BOILING RANGE SUBSTANTIALLY FREE OF HYDROGEN SULFIDE BUT CONTAINING SUBSTANTIAL QUANTITIES OF MERCAPTANS, SAID MERCAPTANS CONSISTING PRINCIPALLY OF AROMATIC MERCAPTANS RESULTING FROM THE CRACKING STEP TO THE SUBSTANTIAL EXCLUSION OF ALIPHATIC MERCAPTANS, AND SAID DISTILLATE STOCK CONTAINING BOTH OLEFINS AND DIOLEFINS, THEREAFTER CONTACTING SAID DISTILLATE STOCK WITH AN AQUEOUS ALKALI HYDROXIDE SOLUTION FREE OF OXYGEN, SAID CONTACT BEING CONDUCTED IN THE ABSENCE OF OXYGEN, AND THEREAFTER SEPARATING THE TREATED DISTILLATE STOCK FROM THE SPENT CAUSTIC WHEREBY A GUM STABLE, SUBSTANTIALLY MERCCAPTAN SULFUR FREE GASOLINE IS OBTAINED.
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |