US3422163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of aromatics from multiple hydrocarbon streams
Assignee: Universal Oil Products Co
•
Filing: 1965-10-21
•
Granted: 1969-01-14
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 George F Asselin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:39
CPC Classifications
C; C10; C10G; C10G21/00; B; B01; B01D; B01D11/00; B01D11/04; B01D11/0488
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2407820A
Cited
US2365898A
Cited
US2770663A
Cited
US2886610A
Cited
US3037062A
Cited
US3200165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |