Patent US2828313A successfully refreshed from Google Patents.
US2828313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of 1.2-diaminocyclohexanes
Assignee: BASF SE
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Filing: 1956-01-04
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Granted: 1958-03-25
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Expires: 1976-01-04
Abstract
No abstract record available.
Inventors
- 👤 Scholz Heinrich
- 👤 Guenthert Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:53
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PRODUCTION OF 1.2-DIAMINOCYCLOHEXANES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PRODUCTION OF 1.2-DIAMINOCYCLOHEXANES OF THE GENERAL FORMULA
Claim 3
Dependent Claim
58 words
A PROCESS FOR THE PRODUCTION OF 1-(PIPERIDINO)-2AMINOCYCLOHEXANE WHICH CONSISTS IN LEADING 1.2-DINITROCYCLOHEXANE IN THE LIQUID PHASE WITH AN EXCESS OF HYDROGEN AND OF PIPERIDINE AT ABOUT 50* TO 200*C. UNDER A PRESSURE OF ABOUT 100 TO 300 ATMOSPHERES OVER A HYDROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF REDUCED COBALT AND NICKEL OXIDES AND RANEY COBALT AND NICKEL.
Claim 4
Dependent Claim
58 words
A PROCESS FOR THE PRODUCTION OF 1-(PIPERIDINO)-2AMINOCYCLOHEXANE WHICH CONSISTS IN LEADING 1.2-DINITROCYCLOHEXANE IN THE LIQUID PHASE WITH AN EXCESS OF HYDROGEN AND OF PIPERIDINE AT ABOUT 50* TO 200*C. UNDER A PRESSURE OF ABOUT 100 TO 300 ATMOSPHERES OVER A HYDROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF REDUCED COBALT AND NICKEL OXIDES AND RANEY COBALT AND NICKEL.
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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |