US3051753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activators for rhodium catalysts
Assignee: Dow Chemical Co
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Filing: 1958-12-29
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Granted: 1962-08-28
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Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Dietzler
- 👤 Theodore R Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:26
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/30; C07C209/32; C07C209/36; C07C209/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A PROCESS FOR PRODUCING AN AROMATIC PRIMARY HALOAMINE WHEREIN THE HALOGEN HAS AN ATOMIC NUMBER BELOW 36 COMPRISING HYDROGENATING THE CORRESPONDING NITROCOMPOUND AT A TEMPERATURE OF ABOUT 20 TO 100*C. AND A HYDROGEN PRESSURE OF ABOUT 1 TO 30 ATMOSPHERES AND IN THE PRESENCE OF A CATALYTIC AMOUNT OF RHODIUM, THE IMPROVEMENT CONSISTING OF CONDUCTING THE HYDROGENATION IN THE PRESENCE OF CALCIUM HYDROXIDE.
Claim 2
Dependent Claim
64 words
IN A PROCESS FOR PRODUCING AN AROMATIC PRIMARY HALOAMINE WHEREIN THE HALOGEN HAS AN ATOMIC NUMBER BELOW 36 COMPRISING HYDROGENATING THE CORRESPONDING NITROCOMPOUND AT A TEMPERATURE OF ABOUT 20 TO 100*C. AND A HYDROGEN PRESSURE OF ABOUT 1 TO 30 ATMOSPHERES AND IN THE PRESENCE OF A CATALYTIC AMOUNT OF RHODIUM, THE IMPROVEMENT CONSISTING OF CONDUCTING THE HYDROGENATION IN THE PRESENCE OF CALCIUM HYDROXIDE.
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |