Patent US4284305A successfully refreshed from Google Patents.
Patent US2885439A successfully refreshed from Google Patents.
US2885439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of substituted amines
Assignee: Monsanto Chemicals Ltd
•
Filing: 1950-10-11
•
Granted: 1959-05-05
•
Expires: 1970-10-11
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand B Zienty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:03
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/24; C07C209/26; C07C211/00; C07C211/33; C07C211/34; C07C211/36; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR PREPARING CYCLOALKYL AMINOPROPANES WHICH COMPRISES REACTING A MIXTURE OF A CYCLOALKENYL ACETONE SELECTED FROM THE GROUP CONSISTING OF A CYALOPENTENYL ACETONE, A CYCLOHEXENYL ACETONE AND A CYCLOHEPTENYL ACETONE, AND AMMONIA IN THE PRESENCE OF HYDROGEN AND A HYDROGENATION CATALYST.
Claim 2
Dependent Claim
42 words
A PROCESS FOR PREPARING CYCLOALKYL AMINOPROPANES WHICH COMPRISES REACTING A MIXTURE OF A CYCLOALKENYL ACETONE SELECTED FROM THE GROUP CONSISTING OF A CYALOPENTENYL ACETONE, A CYCLOHEXENYL ACETONE AND A CYCLOHEPTENYL ACETONE, AND AMMONIA IN THE PRESENCE OF HYDROGEN AND A HYDROGENATION CATALYST.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |