US2364416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of thiophenols from hydrophobic liquid mixtures
Assignee: Pure Oil Co
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Filing: 1941-06-21
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Granted: 1944-12-05
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Expires: 1961-06-21
Abstract
No abstract record available.
Inventors
- 👤 Jr George W Ayers
- 👤 Meyer S Agruss
- 👤 Richmond T Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:02
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/26; C07C319/28; C07C319/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-12-05 | 1948-06-05 | 1948-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-12-05 | 1952-06-05 | 1952-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-12-05 | 1956-06-05 | 1956-12-05 | $7700.00 | Window Closed / Lapsed |