US3449251A
Expired / Lapsed
US
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Wax crystal modifiers for hydrocarbon oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1968-05-28
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Granted: 1969-06-10
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Expires: 1988-05-28
Abstract
No abstract record available.
Inventors
- 👤 Norman Tunkel
- 👤 William C Hollyday Jr
- 👤 Jeffrey H Bartlett
- 👤 Anthony H Gleason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/04; C10M; C10M145/00; C10M145/02; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/196; C10L1/1963; C10L1/1966; C10L1/197; C10L1/1973; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10
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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |