US2549052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization of hydrocarbon oils
Assignee: Universal Oil Products Co
•
Filing: 1948-12-23
•
Granted: 1951-04-17
•
Expires: 1968-12-23
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Brown
- 👤 Warren W Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:58
CPC Classifications
C; C10; C10G; C10G19/00; E; E21; E21B; E21B37/00; E21B37/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR REMOVING ACIDIC ORGANIC COMPOUNDS FROM HYDROCARBON OIL HEAVIER THAN GASOLINE WHICH COMPRISES CONTACTING SAID OIL WITH AN ALKALI-SOLVENT-SOLUTION CONTAINING FROM ABOUT 2 TO ABOUT 20 VOLUMES OF HEAVY XYLENOLS PER 100 VOLUMES OF SAID SOLUTION, AND SEPARATING TREATED OIL FROM SAID SOLUTION.
Claim 2
Dependent Claim
45 words
A PROCESS FOR REMOVING ACIDIC ORGANIC COMPOUNDS FROM HYDROCARBON OIL HEAVIER THAN GASOLINE WHICH COMPRISES CONTACTING SAID OIL WITH AN ALKALI-SOLVENT-SOLUTION CONTAINING FROM ABOUT 2 TO ABOUT 20 VOLUMES OF HEAVY XYLENOLS PER 100 VOLUMES OF SAID SOLUTION, AND SEPARATING TREATED OIL FROM SAID SOLUTION.
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) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |