Patent US2848495A successfully refreshed from Google Patents.
US2848495A
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Method of manufacture of amines
Assignee: DERIVES de l ACETYLENE SOC IND
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Filing: 1955-10-18
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Granted: 1958-08-19
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Expires: 1975-10-18
Abstract
No abstract record available.
Inventors
- 👤 Villemey Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:52
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16; C07C209/24; C07C209/26; C07C211/00; C07C211/01; C07C211/02; C07C211/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OF MANUFACTURING ISOPROPYLAMINE COMPRISING AMINATING ISOPROPANOL WITH AMMONIA AT A TEMPERATURE BETWEEN ABOUT 60*C. AND 150*C. UNDER AUTOGENOUS PRESSURE IN THE PRESENCE OF AN AMINATION CATALYST AND A HYDROGEN-ACCEPTING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF THE ALDEHYDES AND KETONES CORRESPONDING TO THE ISOPROPANOL.
Claim 2
Independent Claim
46 words
A METHOD OF MANUFACTURING ISOPROPYLAMINE COMPRISING AMINATING ISOPROPANOL WITH AMMONIA AT A TEMPERATURE BETWEEN ABOUT 60*C. AND 150*C. UNDER AUTOGENOUS PRESSURE IN THE PRESENCE OF AN AMINATION CATALYST AND A HYDROGEN-ACCEPTING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF THE ALDEHYDES AND KETONES CORRESPONDING TO THE ISOPROPANOL.
References Cited (Backward Citations)
US2519560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |