US3254048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating at least two immiscible liquids by causing interpenetration and intermixing of liquids of different densities
Assignee: Ruhrchemie AG
•
Filing: 1963-12-24
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Granted: 1966-05-31
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Expires: 1983-12-24
Abstract
No abstract record available.
Inventors
- 👤 Schaub Franz
- 👤 Hibbel Josef
- 👤 Schleper Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:07
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043; B01D11/0442; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR THE PURIFICATION OF POWDERED POLYETHYLENE SUSPENDED IN A LIQUID HYDROCARBON, WHICH COMPRISES CONDUCTING THE SUSPENSION INTO THE LOWER SECTION OF A VERTICAL CYLINDRICAL TUBE PROVIDED WITH GUIDE VANES, INTRODUCING A GAS INTO SAID TUBE AT A POINT BELOW SAID SUSPENSION IN AN UPWARD FLOW AND INTRODUCING WATER INTO THE UPPER SECTION OF SAID TUBE; THE SUSPENSION, WATER AND GAS MEETING COUNTERCURRENTLY IN A TURBULENT ROTARY MOTION INDUCED BY SAID GUIDE VANES WHICH ALSO IMPART, TOGETHER WITH THE FLOW OF THE GAS, A DAMMING EFFECT UPON SUSPENSION, WATER AND GAS, WITH PARTIAL IMPOUNDING OF SUSPENSION
Claim 2
Dependent Claim
97 words
A PROCESS FOR THE PURIFICATION OF POWDERED POLYETHYLENE SUSPENDED IN A LIQUID HYDROCARBON, WHICH COMPRISES CONDUCTING THE SUSPENSION INTO THE LOWER SECTION OF A VERTICAL CYLINDRICAL TUBE PROVIDED WITH GUIDE VANES, INTRODUCING A GAS INTO SAID TUBE AT A POINT BELOW SAID SUSPENSION IN AN UPWARD FLOW AND INTRODUCING WATER INTO THE UPPER SECTION OF SAID TUBE; THE SUSPENSION, WATER AND GAS MEETING COUNTERCURRENTLY IN A TURBULENT ROTARY MOTION INDUCED BY SAID GUIDE VANES WHICH ALSO IMPART, TOGETHER WITH THE FLOW OF THE GAS, A DAMMING EFFECT UPON SUSPENSION, WATER AND GAS, WITH PARTIAL IMPOUNDING OF SUSPENSION
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |