Patent US1574489A successfully refreshed from Google Patents.
US3662002A
Expired / Lapsed
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Catalytic production of dimethyl sulfide
Assignee: Glanzstoff AG
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Filing: 1969-08-11
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Granted: 1972-05-09
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Expires: 1989-08-11
Abstract
Abstract PROCESS FOR THE CATALYTIC PRODUCTION OF DIMETHYL SULFIDE IN WHICH METHANOL AND HYDROGEN SULFIDE CAN BE REACTED IN ABOUT EQUIMOLAR AMOUNT TO ACHIEVE ALMOST QUANTITATIVE YIELDS OF DIMETHYL SULFIDE BY CARRYING OUT THE REACTION IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF ALUMININUM OXIDE HAVING A SUPERIMPOSED LAYER OF UP TO ABOUT 10% BY WEIGHT OF SILICA APPLIED THERETO.
Inventors
- 👤 Helmut Magerlein
- 👤 Gerhard Meyer
- 👤 Hans-Dieter Rupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:53
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14; B; B01; B01J; B01J21/00; B01J21/12
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |