US2449402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating aromatic hydrocarbons from a hydrocarbon mixture
Assignee: Sunoco Inc
•
Filing: 1944-01-24
•
Granted: 1948-09-14
•
Expires: 1964-01-24
Abstract
No abstract record available.
Inventors
- 👤 Lipkin Moses Robert
- 👤 Alfred E Hirschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:16
CPC Classifications
C; C10; C10G; C10G25/00; C07; C07C; C07C15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1412954A
Cited
US1453215A
Cited
GB276736A
Cited
US1854205A
Cited
US1997174A
Cited
US2321460A
Cited
US2415315A
Cited
US2395491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |