US3597438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reductive amination of aldehydes with rhodium catalysts
Assignee: EIDP Inc
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Filing: 1968-05-06
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Granted: 1971-08-03
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Expires: 1988-05-06
Abstract
Abstract REDUCTIVE AMINATION OF ALDEHYDES IN THE PRESENCE OF A RHODIUM CATALYST IS CONDUCTED AT TEMPERATURES OF FROM 0* TO 125* C. RHODIUM CATALYSTS ARE PARTICULARLY DIRECTIVE TOWARD SECONDARY AMINES.
Inventors
- 👤 Loren D Brake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:47
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74
Claims Analysis
Total Claims: 0
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |