Patent US2606925A successfully refreshed from Google Patents.
US2606925A
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Ruthenium catalyzed hydrogenation process for obtaining aminocyclohexyl compounds
Assignee: EIDP Inc
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Filing: 1949-12-15
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Granted: 1952-08-12
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Expires: 1969-12-15
Abstract
No abstract record available.
Inventors
- 👤 Gerald M Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:47
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/462; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A PROCESS FOR OBTAINING AN AMINOCYCLOHEXYL COMPOUND BY HYDROGENATION OF AN ORAMATIC COMPOUND CONTAINING A BENZENE NUCLEUS AND A NITROGEN ATOM DIRECTLY ATTACHED THERETO, THE IMPROVEMENT WHICH COMPRISES REACTING, AS THE SOLE REACTANTS, HYDROGEN AND SAID AROMATIC COMPOUND CONTAINING A BENZENE NUCLEUS AND A NITROGEN ATOM DIRECTLY ATTACHED THERETO, AT A TEMPERATURE WITHIN THE RANGE OF FROM 20* TO 250* C., UNDER PRESSURE IN EXCESS OF 100 LBS./SQ. IN., AND IN CONTACT WITH AT LEAST 0.01% BY WEIGHT, BASED ON SAID AROMATIC COMPOUND AND CALCULATED AS METALLIC RUTHENIUM, OF A RUTHENIUM CATALYST IN WHICH THE ACTIVE CATALYTIC COMPONENT IS SELECTED FROM THE GROUP CONSISTING OF ELEMENTARY RUTHENIUM, RUTHENIUM, OXIDES, SALTS OR RUTHENIUM IN WHICH THE RUTHENIUM IS PRESENT IN THE ANION, AND MONOMERIC RUTHENIUM, SALTS IN WHICH THE CATION CONSISTS OF RUTHENIUM, AND ISOLATING THEREFROM AN AMINOCYCLOHXYL COMPOUND.
Claim 2
Dependent Claim
139 words
IN A PROCESS FOR OBTAINING AN AMINOCYCLOHEXYL COMPOUND BY HYDROGENATION OF AN ORAMATIC COMPOUND CONTAINING A BENZENE NUCLEUS AND A NITROGEN ATOM DIRECTLY ATTACHED THERETO, THE IMPROVEMENT WHICH COMPRISES REACTING, AS THE SOLE REACTANTS, HYDROGEN AND SAID AROMATIC COMPOUND CONTAINING A BENZENE NUCLEUS AND A NITROGEN ATOM DIRECTLY ATTACHED THERETO, AT A TEMPERATURE WITHIN THE RANGE OF FROM 20* TO 250* C., UNDER PRESSURE IN EXCESS OF 100 LBS./SQ. IN., AND IN CONTACT WITH AT LEAST 0.01% BY WEIGHT, BASED ON SAID AROMATIC COMPOUND AND CALCULATED AS METALLIC RUTHENIUM, OF A RUTHENIUM CATALYST IN WHICH THE ACTIVE CATALYTIC COMPONENT IS SELECTED FROM THE GROUP CONSISTING OF ELEMENTARY RUTHENIUM, RUTHENIUM, OXIDES, SALTS OR RUTHENIUM IN WHICH THE RUTHENIUM IS PRESENT IN THE ANION, AND MONOMERIC RUTHENIUM, SALTS IN WHICH THE CATION CONSISTS OF RUTHENIUM, AND ISOLATING THEREFROM AN AMINOCYCLOHXYL COMPOUND.
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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |