Patent US3076819A successfully refreshed from Google Patents.
US3076819A
Expired / Lapsed
US
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Process for the production of ether amines
Assignee: Dehydag Deutsche Hydrierwerke GmbH
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Filing: 1959-11-19
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Granted: 1963-02-05
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Expires: 1979-11-19
Abstract
No abstract record available.
Inventors
- 👤 Heise Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:07
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/42; C10; C10M; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10N; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
A PROCESS FOR THE PRODUCTION OF ETHER AMINES HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
12 words
A PROCESS FOR THE PRODUCTION OF ETHER AMINES HAVING THE STRUCTURAL FORMULA:
Claim 3
Dependent Claim
66 words
A PROCESS FOR THE PRODUCTION OF 3-TETRAHYDRO-FURFURYL-OXY-PROPYL AMINE WHICH COMPRISES CONDENSING ACRYLONITRILE WITH AN EXCESS OF TETRAHYDROFURFURYL ALCOHOL IN THE PRESENCE OF ABOUT 1 TO ABOUT 8 ATMOSPHERES'' GAUGE OF AMMONIA, AND CATALYTICALLY HYDROGENATING THE ETHER NITRILE THUS OBTAINED IN THE PRESENCE OF HYDROGEN AND A HYDROGENATION CATALYST AT PRESSURES OF ABOUT 30 TO 300 ATMOSPHERES'' GAUGE AND AT A TEMPERATURE OF ABOUT 30 TO 180*C.
Claim 4
Dependent Claim
66 words
A PROCESS FOR THE PRODUCTION OF 3-TETRAHYDRO-FURFURYL-OXY-PROPYL AMINE WHICH COMPRISES CONDENSING ACRYLONITRILE WITH AN EXCESS OF TETRAHYDROFURFURYL ALCOHOL IN THE PRESENCE OF ABOUT 1 TO ABOUT 8 ATMOSPHERES'' GAUGE OF AMMONIA, AND CATALYTICALLY HYDROGENATING THE ETHER NITRILE THUS OBTAINED IN THE PRESENCE OF HYDROGEN AND A HYDROGENATION CATALYST AT PRESSURES OF ABOUT 30 TO 300 ATMOSPHERES'' GAUGE AND AT A TEMPERATURE OF ABOUT 30 TO 180*C.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |