Patent US2927075A successfully refreshed from Google Patents.
US2927075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste water treatment
Assignee: Universal Oil Products Co
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Filing: 1956-05-18
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Granted: 1960-03-01
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Expires: 1976-05-18
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:20
CPC Classifications
C; C10; C10G; C10G19/00; C02; C02F; C02F1/00; C02F1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD OF TREATING WASTE WATER FROM PETROLEUM REFINING PROCESSES TO REMOVE HYDROGEN SULFIDE, AMMONIA AND PHENOLS THEREFROM, WHICH COMPRISES STRIPPING HYDROGEN SULFIDE AND AMMONIA FROM SAID WASTE WATER, CONTACTING A PORTION OF THE THUS TREATED WATER-CONTAINING PHENOLS WITH A HYDROCARBON POLYMERIZATION UNIT FEED STOCK CONTAINING HYDROGEN SULFIDE AND AMMONIA TO REMOVE A PORTION OF THE HYDROGEN SULFIDE AND AMMONIA FROM SAID FEED STOCK AND TO TRANSFER PHENOLS FROM SAID TREATED WATER TO THE HYDROCARBON FEED STOCK, CONTACTING THE RESULTANT PHENOL-CONTAINING FEED STOCK WITH CAUSTIC SOLUTION OF A CONCENTRATION WHICH WILL REMOVE ADDITIONAL HYDROGEN SULFIDE THEREFROM, AND THEREAFTER CONTACTING SAID FEED STOCK WITH ANOTHER PORTION OF SAID TREATED WATER CONTAINING PHENOLS TO REMOVE ENTRAINED CAUSTIC SOLUTION FROM AND TO INTRODUCE ADDITIONAL PHENOLS TO THE FEED STOCK.
Claim 2
Independent Claim
126 words
A METHOD OF TREATING WASTE WATER FROM PETROLEUM REFINING PROCESSES TO REMOVE HYDROGEN SULFIDE, AMMONIA AND PHENOLS THEREFROM, WHICH COMPRISES STRIPPING HYDROGEN SULFIDE AND AMMONIA FROM SAID WASTE WATER, CONTACTING A PORTION OF THE THUS TREATED WATER-CONTAINING PHENOLS WITH A HYDROCARBON POLYMERIZATION UNIT FEED STOCK CONTAINING HYDROGEN SULFIDE AND AMMONIA TO REMOVE A PORTION OF THE HYDROGEN SULFIDE AND AMMONIA FROM SAID FEED STOCK AND TO TRANSFER PHENOLS FROM SAID TREATED WATER TO THE HYDROCARBON FEED STOCK, CONTACTING THE RESULTANT PHENOL-CONTAINING FEED STOCK WITH CAUSTIC SOLUTION OF A CONCENTRATION WHICH WILL REMOVE ADDITIONAL HYDROGEN SULFIDE THEREFROM, AND THEREAFTER CONTACTING SAID FEED STOCK WITH ANOTHER PORTION OF SAID TREATED WATER CONTAINING PHENOLS TO REMOVE ENTRAINED CAUSTIC SOLUTION FROM AND TO INTRODUCE ADDITIONAL PHENOLS TO THE FEED STOCK.
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |