Patent US3257464A successfully refreshed from Google Patents.
US3257464A
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Process for the preparation of ethyl mercaptan and diethyl sulfide
Assignee: Pennwalt Corp
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Filing: 1963-05-14
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Granted: 1966-06-21
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Expires: 1983-05-14
Abstract
No abstract record available.
Inventors
- 👤 Buchholz Bernard
- 👤 Roland H Goshorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:01
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/02; C07C319/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/30; C07C319/14; C07C319/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE PROCESS OF PREPARING ETHYL MERCAPTAN AND DIETHYL SULFIDE BY REACTING HYDROGEN SULFIDE WITH ETHYLENE AT A TEMPERATURE BETWEEN ABOUT 250* AND ABOUT 450*C. AND AT A PRESSURE OF AT LEAST ABOUT 100 P.S.I.G. IN THE PRESENCE OF A CATALYST CONSISTING OF ALUMINA CONTAINING FROM ABOUT 0.5 TO 15% BY WEIGHT OF AN ALKALI METAL SALT OF AN OXYGEN ACID OF A GROUP VIB METAL SELECTED FROM THE GROUP OF CROMATES, MOLYDATES AND TUNGSTATES.
Claim 2
Dependent Claim
74 words
THE PROCESS OF PREPARING ETHYL MERCAPTAN AND DIETHYL SULFIDE BY REACTING HYDROGEN SULFIDE WITH ETHYLENE AT A TEMPERATURE BETWEEN ABOUT 250* AND ABOUT 450*C. AND AT A PRESSURE OF AT LEAST ABOUT 100 P.S.I.G. IN THE PRESENCE OF A CATALYST CONSISTING OF ALUMINA CONTAINING FROM ABOUT 0.5 TO 15% BY WEIGHT OF AN ALKALI METAL SALT OF AN OXYGEN ACID OF A GROUP VIB METAL SELECTED FROM THE GROUP OF CROMATES, MOLYDATES AND TUNGSTATES.
References Cited (Backward Citations)
GB532676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |