US2999808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste water treatment
Assignee: Universal Oil Products Co
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Filing: 1957-12-26
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Granted: 1961-09-12
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Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:29
CPC Classifications
C; C10; C10G; C10G19/00; C02; C02F; C02F1/00; C02F1/26; C07; C07C; C07C37/00; C07C37/005; C07C37/009; C07C37/68; C07C37/70; C07C37/72; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/908
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
THE METHOD OF REMOVING PHENOLS FROM WATER CONTAMINATED THEREWITH WHICH COMPRISES CONTACTING SAID WATER WITH CRUDE OIL TO THEREBY TRANSFER A MAJOR PORTION OF THE PHENOLS FROM SAID WATER TO SAID CRUDE OIL, WITHDRAWING TREATED WATER REDUCED IN PHENOL CONTENT, SEPARATELY WITHDRAWING CRUDE OIL CONTAINING PHENOLS, FRACTIONATING SAID CRUDE OIL CONTAINING PHENOLS TO SEPARATE A LIGHT FRACTION COMPRISING COMPONENTS BOILING UP TO ABOUT 300*F., AN INTERMEDIATE PHENOL-CONTAINING FRACTION COMPRISING COMPONENTS BOILING FROM ABOUT 300* TO ABOUT 650*F., AND A HEAVY FRACTION COMPRISING COMPONENTS BOILING ABOVE ABOUT 650*F., SUBJECTING SAID INTERMEDIATE FRACTION TO TREATMENT WITH HYDROGEN AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 800*F. TO REMOVE PHENOLS FROM SAID INTERMEDIATE FRACTION, AND RECOVERING A HYDROTREATED OIL SUBSTANTIALLY FREE OF PHENOLS.
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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |