Patent US3136818A successfully refreshed from Google Patents.
US3136818A
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US
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Production of aniline
Assignee: BASF SE
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Filing: 1961-01-10
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Granted: 1964-06-09
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Expires: 1981-01-10
Abstract
No abstract record available.
Inventors
- 👤 Sperber Heinrich
- 👤 Poehler Guenter
- 👤 Pistor Hans Joachim
- 👤 Wegerich Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:12
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/30; C07C209/32; C07C209/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A PROCESS FOR THE PRODUCTION OF ANILINE BY HYDROGENATION OF NITROBENZENE WITH A SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND A HYDROGEN-CONTAINING GAS IN THE PRESENCE OF A CATALYST IN A FLUIDIZED LAYER, THE IMPROVEMENT OF INTRODUCING THE INITIAL MATERIAL TO BE HYDROGENTAED IN AT LEAST PARTLY LIQUID PHASE INTO THE FLUIDIZED LAYER JAT A PLURALITY OF POINTS AT LEAST SOME OF WHICH ARE AT DIFFERENT HEIGHTS AND ARE SEPARATED FROM EACH OTHER BY A VERTICAL DISTANCE OF AT LEAST 0.3 METER.
Claim 2
Dependent Claim
85 words
IN A PROCESS FOR THE PRODUCTION OF ANILINE BY HYDROGENATION OF NITROBENZENE WITH A SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND A HYDROGEN-CONTAINING GAS IN THE PRESENCE OF A CATALYST IN A FLUIDIZED LAYER, THE IMPROVEMENT OF INTRODUCING THE INITIAL MATERIAL TO BE HYDROGENTAED IN AT LEAST PARTLY LIQUID PHASE INTO THE FLUIDIZED LAYER JAT A PLURALITY OF POINTS AT LEAST SOME OF WHICH ARE AT DIFFERENT HEIGHTS AND ARE SEPARATED FROM EACH OTHER BY A VERTICAL DISTANCE OF AT LEAST 0.3 METER.
References Cited (Backward Citations)
US2432087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |