Patent US3674683A successfully refreshed from Google Patents.
US3674683A
Expired / Lapsed
US
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Process for the removal of oil from the surface of a body of water
Assignee: Philip Morris USA Inc
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Filing: 1970-01-02
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Granted: 1972-07-04
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Expires: 1990-01-02
Abstract
Abstract This disclosure relates to a process for removal of oil from the surface of a body of water, wherein a material comprising a particulate microporous hydrophobic vinyl chloride polymer, such as polyvinyl chloride, is applied to the oil.
Inventors
- 👤 Norman B Rainer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:39
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/22; C; C02; C02F; C02F1/00; C02F1/68; C02F1/681
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
17 words
The process of claim 1, wherein the microporous particles used consist essentially of -40 +80 mesh powder.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |