US3297568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for purifying industrial waste waters containing oil and solids
Assignee: Phillips Petroleum Co
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Filing: 1964-11-25
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Granted: 1967-01-10
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Expires: 1984-11-25
Abstract
No abstract record available.
Inventors
- 👤 Martin E Mcmahon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:26
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/04; B01D17/047; B01D21/00; B01D21/01; B01D21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD FOR PURIFYING INDUSTRIAL WASTE WATERS CONTAINING OIL AND SOLIDS COMPRISING PASSING SAID WASTE WATERS TO A SEPARATOR, SEPARATING A LIQUID PHASE FROM A SOLID PHASE, PASSING SAID LIQUID PHASE TO A SURGE ZONE WHICH CONTAINS A LARGE QUANTITY OF IMPURE LIQUID, BLENDING SAID IMPURE LIQUID IN SAID SURGE ZONE WITH SAID LIQUID PHASE TO PRODUCE A SUBSTANTIALLY HOMOGENEOUS MIXTURE OF LIQUIDS, REMOVING A PORTION OF SAID HOMOGENIZED LIQUID FROM SAID SURGE ZONE AND ADMIXING THE SAME WITH SAID SOLIDS
Claim 2
Independent Claim
81 words
A METHOD FOR PURIFYING INDUSTRIAL WASTE WATERS CONTAINING OIL AND SOLIDS COMPRISING PASSING SAID WASTE WATERS TO A SEPARATOR, SEPARATING A LIQUID PHASE FROM A SOLID PHASE, PASSING SAID LIQUID PHASE TO A SURGE ZONE WHICH CONTAINS A LARGE QUANTITY OF IMPURE LIQUID, BLENDING SAID IMPURE LIQUID IN SAID SURGE ZONE WITH SAID LIQUID PHASE TO PRODUCE A SUBSTANTIALLY HOMOGENEOUS MIXTURE OF LIQUIDS, REMOVING A PORTION OF SAID HOMOGENIZED LIQUID FROM SAID SURGE ZONE AND ADMIXING THE SAME WITH SAID SOLIDS
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |