Patent US2815389A successfully refreshed from Google Patents.
US2815389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of phenol from aqueous phenolates
Assignee: Rain Carbon Germany GmbH
•
Filing: 1951-09-15
•
Granted: 1957-12-03
•
Expires: 1971-09-15
Abstract
No abstract record available.
Inventors
- 👤 Geller Julius
- 👤 Ratte Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:49
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/055; C07C37/68; C07C37/70; C07C37/74
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1213142A
Cited
US1715313A
Cited
US1944681A
Cited
US2391839A
Cited
US2510548A
Cited
US2573244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |