Patent US3440164A successfully refreshed from Google Patents.
US3440164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for desulfurizing vacuum distilled fractions
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-09-03
•
Granted: 1969-04-22
•
Expires: 1985-09-03
Abstract
No abstract record available.
Inventors
- 👤 Clyde L Aldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:29
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/16; C10G19/00; C10G19/067; C10G67/02; C10G67/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |