US3153089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of acetophenone-azine
Assignee: Honeywell International Inc
•
Filing: 1961-08-16
•
Granted: 1964-10-13
•
Expires: 1981-08-16
Abstract
No abstract record available.
Inventors
- 👤 Ameen Jameil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:08
CPC Classifications
C; C07; C07C; C07C251/00; C07C251/72; C07C251/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A PROCESS FOR PRODUCING ACETOPHENONE-AZINE WHICH CONSISTS IN REACTING ACETOPHENONE-SEMICARBAZONE WITH ABOUT 1 TO 2 MOLS OF ACETOPHENONE PER MOLE OF THE SEMICARBAZONE AND EXCESS AMMONIA AT ELEVATED TEMPERATURE, AND RECOVERING THE ACETOPHENONE-AZINE FROM THE RESULTING REACTION MIXTURE.
Claim 2
Dependent Claim
38 words
A PROCESS FOR PRODUCING ACETOPHENONE-AZINE WHICH CONSISTS IN REACTING ACETOPHENONE-SEMICARBAZONE WITH ABOUT 1 TO 2 MOLS OF ACETOPHENONE PER MOLE OF THE SEMICARBAZONE AND EXCESS AMMONIA AT ELEVATED TEMPERATURE, AND RECOVERING THE ACETOPHENONE-AZINE FROM THE RESULTING REACTION MIXTURE.
References Cited (Backward Citations)
US2894032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |