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US3729296A
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Polymeric wax crystal modifiers for high wax content petroleum oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1966-10-14
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Granted: 1973-04-24
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Expires: 1986-10-14
Abstract
Abstract OIL-SOLUBLE POLYMERS OF UNSATURATED ESTERS HAVING AKYL SIDE CHAINS CONTAINING ABOUT 18 TO 34 CARBON ATOMS IMPROVE FLOW AND POUR POINTS OF HIGH WAX CONTENT PETROLEUM OILS SUCH AS CRUDES, RESIDUA, ETC., AND ARE USEFUL AS DEWAXING ACIDS.
Inventors
- 👤 H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:37
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10G; C10G73/00; C10G73/02; C10G73/04; C10G73/06; C10L1/16; C10L1/1625; C10L1/1633; C10L1/1641; C10L1/165; C10L1/1666; C10L1/196; C10L1/1963; C10L1/1966; C10L1/197; C10L1/1973; C10L1/22; C10L1/234; C10L1/236; C10L1/2364
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |