US3681038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Middle distillate
Assignee: Universal Oil Products Co
•
Filing: 1970-03-09
•
Granted: 1972-08-01
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Expires: 1990-03-09
Abstract
Abstract MIDDLE DISTILLATE OF IMPROVED POUR POINT CONTAINING A POUR-POINT DEPRESSANT CONCENTRATION OF AN N,N-DIALKYLRICINOLEAMIDE IN WHICH AT LEAST ONE THE ALKYLS CONTAINS FROM ABOUT 12 TO ABOUT 26 CARBON ATOMS.
Inventors
- 👤 Alexander Gaydasch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:14
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C10L1/18; C10L1/19; C10L1/2222
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |