US3595922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzil preparation
Assignee: EIDP Inc
•
Filing: 1969-03-25
•
Granted: 1971-07-27
•
Expires: 1989-03-25
Abstract
Abstract PROCESS FOR PREPARING BENZILS FROM BENZOINS BY REACTION WITH CUPRIC CARBOXYLATE CATALYST AT 20-130*C. AND OXYGEN.
Inventors
- 👤 Philip Manos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:11
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/37; C07C45/39
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |