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Patent US3507782A successfully refreshed from Google Patents.
US3507782A
Expired / Lapsed
US
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Separation of hydrocarbons from plant process waste water
Assignee: Chevron USA Inc
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Filing: 1967-09-08
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Granted: 1970-04-21
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Expires: 1987-09-08
Abstract
No abstract record available.
Inventors
- 👤 John R Strausser
- 👤 Ralph S Kurland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:15
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04; B; B01; B01D; B01D12/00; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D17/047; C02; C02F; C02F1/00; C02F1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1480091A
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US1944479A
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US2073248A
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US2588794A
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US2785120A
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US2808375A
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US3267029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |