Patent US3798158A successfully refreshed from Google Patents.
US3798158A
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US
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Process for removing oil and other organic contaminants from water
Assignee: Col-Mont Corp
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Filing: 1971-05-26
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Granted: 1974-03-19
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Expires: 1991-05-26
Abstract
Abstract METHOD OF THE REMOVAL OF OIL AND OTHER ORGANIC CONTAMINANTS FROM POLLUTED EFFLUENT, PARTICULARLY OIL REFINERY EFFLUENT. THE OIL IS SORBED BY CARBONACEOUS MATERIAL EITHER IN THE FORM OF -200 MESH OR FINER CARBON PARTICLES IN THE FORM OF COAL, FLY ASH OR ACTIVATED CARBON, OR A POROUS MATRIX COMPRISED OF SUCH FINELY DIVIDED CARBON PARTICLES AND A POWDERED PLASTIC SUCH AS POLYETHYLENE, OR A COMBINATION OF POWDERED CARBON PARTICLES AND MATRIX. THE SORBENT IS STRIPPED OF THE OIL THEREBY CONDITIONING THE SAME FOR REUSE IN THE SYSTEM, OR WITHDRAWAL FROM THE SYSTEM, IN THE CASE OF MATRIX FORMATION, FOR USE INDEPENDENT OF THE SYSTEM.
Inventors
- 👤 C Bunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:57
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/0208; B01D17/0211; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |