US3131168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of pour depressants for middle distillate fuels
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1960-01-05
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Granted: 1964-04-28
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Expires: 1980-01-05
Abstract
No abstract record available.
Inventors
- 👤 Ilncykyj Stephan
- 👤 John L Tiedje
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:53
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/197; C10L1/1973; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F218/08; C10L1/146; C10L1/1955; C10L1/196; C10L1/1963; C10L1/22; C10L1/234; C10L1/236; C10L1/2362; C10M; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/10; C10M2217/00; C10M2217/02; C10M2217/026; F; F02; F02B; F02B3/00; F02B3/06; F02B47/00
Claims Analysis
Total Claims: 0
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |