US2788310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
White oil process
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-04-07
•
Granted: 1957-04-09
•
Expires: 1975-04-07
Abstract
No abstract record available.
Inventors
- 👤 William A Wilson
- 👤 Thomas O Wehrle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:48
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A PROCESS OF PREPARING A WHITE OIL WHEREIN A MINERAL OIL IS INITIALLY TREATED TO FORM, NEUTRALIZE, AND REMOVE SULFONIC ACIDS, THE IMPROVEMENT IN FINAL PURIFICATION OF THE NEUTRALIZED OIL FROM WHICH SULFONIC ACIDS HAVE BEEN REMOVED, OF FIRST ADMIXING WITH SAID OIL A RELATIVELY SMALL AMOUNT OF WATER AND THEN TREATING THE RESULTING
Claim 2
Dependent Claim
55 words
IN A PROCESS OF PREPARING A WHITE OIL WHEREIN A MINERAL OIL IS INITIALLY TREATED TO FORM, NEUTRALIZE, AND REMOVE SULFONIC ACIDS, THE IMPROVEMENT IN FINAL PURIFICATION OF THE NEUTRALIZED OIL FROM WHICH SULFONIC ACIDS HAVE BEEN REMOVED, OF FIRST ADMIXING WITH SAID OIL A RELATIVELY SMALL AMOUNT OF WATER AND THEN TREATING THE RESULTING
References Cited (Backward Citations)
US1824615A
Cited
US2581064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |