Patent US3770626A successfully refreshed from Google Patents.
US3770626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sorbent belt
Assignee: Shell USA Inc
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Filing: 1971-10-26
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Granted: 1973-11-06
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Expires: 1991-10-26
Abstract
Abstract APPARATUS AND METHOD FOR REMOVING A POLLUTING LIQUID FROM A WATER SURFACE, THE APPARATUS BEING COMPOSED OF A SORBENT BODY SHAPED TO FORM FREE FLOW PATHS WHICH MOVE THE POLLUTANT INTO INCREASED CONTACT WITH THE SORBENT BODY; THE METHOD INVOLVING A SORBENT BODY SHAPED TO FORM FREE FLOW PATHS AND MOVING THE SORBENT BODY THROUGH THE WATER TO CAUSE THE POLLUTANT TO FLOW IN THE FREE FLOW PATHS TO INCREASE CONTACT WITH THE SORBENT BODY.
Inventors
- 👤 R Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:35
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/104; C; C02; C02F; C02F1/00; C02F1/68; C02F1/681
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |