Patent US3739017A successfully refreshed from Google Patents.
US3739017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of ethylene acetals of aromatic aldehydes
Assignee: EIDP Inc
•
Filing: 1971-05-06
•
Granted: 1973-06-12
•
Expires: 1991-05-06
Abstract
Abstract AN ETHYLENE ACETAL OF AN AROMATIC ALDEHYDE DISSOLVED IN A SUBSTANTIALLY INERT, NONACIDIC ORGANIC SOLVENT WITH A COBALT CATALYST ALSO DISSOLVED THEREIN IS OXIDIZED AT A TEMPERATURE OF APPROXIMATELY 20-125* C. BY MOLECULAR OXYGEN TO FORM A 2-HYDROXYETHYL ESTER OF THE AROMATIC ACID CORRESPONDING TO THE ALDEHYDE.
Inventors
- 👤 E Reilly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:44
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/12; C07D317/14; C07D317/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |