Patent US3410794A successfully refreshed from Google Patents.
US3410794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating hydrocarbons with liquid membranes
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1966-03-14
•
Granted: 1968-11-12
•
Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Norman N Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:34
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/144; B; B01; B01D; B01D61/00; B01D61/38; B01D61/40; C10; C10G; C10G31/00; C10G31/11; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1520953A
Cited
US3168585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |