US2948755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aromatic amines
Assignee: Universal Oil Products Co
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Filing: 1958-03-07
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Granted: 1960-08-09
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Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 Schmerling Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:05
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS WHICH COMPRISES REACTING AN AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISING OF BENZENE AND ALKYL BENZENES WITH ANHYDROUS AMMONIA IN THE PRESENCE OF A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBEDENUM, TUNGSTEN AND CHROMIUM AND AN EASILY REDUCIBLE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, IRON, NICKEL, SILVER AND GOLD AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 200* TO ABOUT 600*C. AND AT A PRESSURE IN THE RANGE OF FROM ABOUT ATMOSPHERIC TO ABOUT 200 ATMOSPHERES, AND RECOVERING THE RESULTANT AROMATIC AMINE.
Claim 2
Dependent Claim
94 words
A PROCESS WHICH COMPRISES REACTING AN AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISING OF BENZENE AND ALKYL BENZENES WITH ANHYDROUS AMMONIA IN THE PRESENCE OF A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBEDENUM, TUNGSTEN AND CHROMIUM AND AN EASILY REDUCIBLE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, IRON, NICKEL, SILVER AND GOLD AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 200* TO ABOUT 600*C. AND AT A PRESSURE IN THE RANGE OF FROM ABOUT ATMOSPHERIC TO ABOUT 200 ATMOSPHERES, AND RECOVERING THE RESULTANT AROMATIC AMINE.
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) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |