Patent US2744137A successfully refreshed from Google Patents.
US2744137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of n-methyl-beta-cyclohexen-(1)-ylethylamine
Assignee: F Hoffmann La Roche AG
•
Filing: 1953-05-26
•
Granted: 1956-05-01
•
Expires: 1973-05-26
Abstract
No abstract record available.
Inventors
- 👤 Grewe Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:36
CPC Classifications
C; C07; C07C; C07C211/00; C07C211/01; C07C211/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS WHICH COMPRISES REACTING B-CYCLOHEXEN(1)-YL-ETHYL-AMINE IN THE PRESENCE OF A CONDENSING AGENT SELECTED FROM THE GROUP CONSISTING OF ZINC CHLORIDE AND THE COMPLEX SALT OF ZINC CHLORIDE WITH B-CYCLOHEXENE-(1)YL-ETHYL-AMINE WITH A KETONE OF THE GENERAL FORMULA
Claim 2
Dependent Claim
37 words
A PROCESS WHICH COMPRISES REACTING B-CYCLOHEXEN(1)-YL-ETHYL-AMINE IN THE PRESENCE OF A CONDENSING AGENT SELECTED FROM THE GROUP CONSISTING OF ZINC CHLORIDE AND THE COMPLEX SALT OF ZINC CHLORIDE WITH B-CYCLOHEXENE-(1)YL-ETHYL-AMINE WITH A KETONE OF THE GENERAL FORMULA
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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |