US3578585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing floating oil from the surface of a body of water
Assignee: Standard Oil Co
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Filing: 1969-03-24
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Granted: 1971-05-11
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Expires: 1989-03-24
Abstract
Abstract A ROTATING CYLINDER COVERED WITH A LAYER OF POROUS POLYURETHANE ABSORBS OIL FLOWING ON A BODY OF WATER, AND A ROLLER SQUEEZES ABSORBED OIL FROM THE LAYER INTO A COLLECTING TROUGH.
Inventors
- 👤 Robert L Yahnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:48
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/103; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |