US3580956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxylation of aromatic compounds
Assignee: Universal Oil Products Co
•
Filing: 1967-11-03
•
Granted: 1971-05-25
•
Expires: 1987-11-03
Abstract
Abstract THE HYDROXYLATION OF AN AROMATIC COMPOUND WHEREIN AN AROMATIC COMPOUND IS REACTED WITH HYDROGEN PEROXIDE IN CONTACT WITH AN ACIDIC CRYSTALLINE ALUMINOSILICATE CATALYST AT HYDROXYLATION CONDITIONS. THE AROMATIC COMPOUND IS EMPLOYED IN MOLAR EXCESS WITH RESPECT TO HYDROGEN PEROXIDE, AND THE CATALYST CONTAINS A RARE-EARTH METALLIC COMPONENT.
Inventors
- 👤 Herman S Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:59
CPC Classifications
C; C07; C07C; C07C309/00; C07C201/00; C07C201/06; C07C201/12; C07C37/00; C07C37/60
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |