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US3747760A
Expired / Lapsed
US
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Method of recovering oil from a water surface
Assignee: Johns Manville Corp
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Filing: 1972-03-23
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Granted: 1973-07-24
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Expires: 1992-03-23
Abstract
Abstract A method for recovering oil from a water surface, wherein the water carrying the oil is flowing in a specific direction relative to a barrier, comprises containing the oil in the barrier to form a confined oil slick having a leading edge. Due to the flow of the water, a head-wave is formed along the leading edge of the confined oil slick and oil removal aparatus is located at the head-wave to remove oil from the head-wave.
Inventors
- 👤 W Ekdahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:49
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/06; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/923
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
A method as claimed in claim 1 and further comprising: a. locating and maintaining additional oil removal means along said head-wave and intermediate said oil removal means at each end of said head-wave.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |