US3563885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of dispersed solids from a liquid
Assignee: Sunoco Inc
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Filing: 1969-08-13
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Granted: 1971-02-16
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Expires: 1989-08-13
Abstract
Abstract DISPERSED SOLIDS CAN BE EFFECIENTLY REMOVED FROM AN ORGANIC LIQUID BY ADDING A SMALL QUANTITY OF ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE TO THE LIQUID CONTAINING THE DISPERSED SOLIDS. THIS POLYETHYLENE HAS A WEIGHT AVERAGE MOLECULAR WEIGHT IN THE RANGE OF 500,000 TO 6,000,000. THE RESULTING MIXTURE OF LIQUID, DISPERSED SOLIDS AND THE POLYETHYLENE IS AGITATED AT AN ELEVATED TEMPERATURE UNTIL THE POLYETHYLENE GOES INTO SOLUTION. AFTERWARDS THE MIXTURE IS ALLOWED COOL AND COAGULATION OCCURS. THE COAGULATED MATERIAL COMPRISING DISPERSED SOLIDS AND THE POLYETHYLENE CAN BE SIMPLY REMOVED BY KNOWN TECHNIQUES.
Inventors
- 👤 Alfred F Talbot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:11
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/20; B; B01; B01D; B01D21/00; B01D21/01; C10G31/00
Claims Analysis
Total Claims: 0
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |