US3026355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of amines from amides by reduction with a borohydride
Assignee: Callery Chemical Co
•
Filing: 1955-07-06
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Granted: 1962-03-20
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Expires: 1975-07-06
Abstract
No abstract record available.
Inventors
- 👤 Henry P Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:15
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
3. A METHOD OF PREPARING AN AMIDE WHICH COMPRISES REACTING A NON-GASEOUS, INTIMATE, SOLVENT-FREE MIXTURE OF ACETANILIDE TO SAID BOROHYDRIDE, IN A MOL RATIO OF SAID ACETAILIDE TO SAID BOROHYDRIDE OF AT LEAST 5 TO 1. AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID MIXTURE AND RECOVERING THE RESULTING MIXTURE OF ANILINE AND N-ETHYLANILINE.
Claim 2
Dependent Claim
55 words
3. A METHOD OF PREPARING AN AMIDE WHICH COMPRISES REACTING A NON-GASEOUS, INTIMATE, SOLVENT-FREE MIXTURE OF ACETANILIDE TO SAID BOROHYDRIDE, IN A MOL RATIO OF SAID ACETAILIDE TO SAID BOROHYDRIDE OF AT LEAST 5 TO 1. AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID MIXTURE AND RECOVERING THE RESULTING MIXTURE OF ANILINE AND N-ETHYLANILINE.
References Cited (Backward Citations)
US2683721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |