Patent US4759406A successfully refreshed from Google Patents.
Patent US3591494A successfully refreshed from Google Patents.
US3591494A
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US
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Method of removing hydrocarbons from the surface of an aqueous body
Assignee: Phillips Petroleum Co
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Filing: 1969-01-30
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Granted: 1971-07-06
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Expires: 1989-01-30
Abstract
Abstract HYDROCARBON FLOATING ON AN AQUEOUS BODY ARE REMOVED BY CONTACTING THEM WITH A FINE POWDER WHICH IS A MIXTURE OF A POLYMER COMPATIBLE WITH HYDROCARBONS AND A WATER INSOLUBLE INROGANIC FILLER, WHEREBY THE POWDER ABSORBS THE HYDROCARBONS AND THEREAFTER SINKS TO THE BOTTOM OF THE AQUEOUS BODY.
Inventors
- 👤 Willie W Crouch
- 👤 Clifford W Childers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:59
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; B; B01; B01J; B01J20/00; B01J20/22
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |