Patent US3198731A successfully refreshed from Google Patents.
US3198731A
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US
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Method of treating oil on the surface of water
Assignee: Yosemite Chemical Co
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Filing: 1961-09-20
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Granted: 1965-08-03
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Expires: 1981-09-20
Abstract
No abstract record available.
Inventors
- 👤 Lew Earl R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:08
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
THE METHOD OF REMOVING AN OIL SPILL FLOATING ON THE SURFACE OF A BODY OF WATER WHICH COMPRISES SPRAYING ONTO THE OIL WHILE IT IS FLOATING ON THE WATER A LIQUID AGENT WHICH CONGEALS THE FLOATING OIL ON THE SURFACE OF THE WATER, AND AFTER FLOATING OIL HAS CONGEALED SEPARATING THE CONGEALED MASS FROM THE WATER SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |