Patent US2839580A successfully refreshed from Google Patents.
US2839580A
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Preparation of diethyl ketone
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-01-11
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Granted: 1958-06-17
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Expires: 1976-01-11
Abstract
No abstract record available.
Inventors
- 👤 Vincent L Hughes
- 👤 Robert S Brodkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:42
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/002; C07C45/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS OF PREPARING DIETHYL KETONE WHICH COMPRISES REACTING ETHYLENE, CARBON MONOXIDE AND A HYDROGEN DONOR IN THE PRESENCE OF A CATALYTIC AMOUNT OF A RHODIUM-CONTAINING CATALYST CAPABLE OF BEING DISSOLVED IN THE REACTION MIXTURE UNDER THE CONDITIONS OF REACTION, SAID CONDITIONS OF REACTION INCLUDING A TEMPERATIRE OF ABOUT 100* TO 300*C., AND PRESSURES OF ABOUT 1500 TO 5000 P.S.I.G., AND RECOVERING DIETHYL KETONE IN GOOD YIELDS.
Claim 2
Dependent Claim
67 words
A PROCESS OF PREPARING DIETHYL KETONE WHICH COMPRISES REACTING ETHYLENE, CARBON MONOXIDE AND A HYDROGEN DONOR IN THE PRESENCE OF A CATALYTIC AMOUNT OF A RHODIUM-CONTAINING CATALYST CAPABLE OF BEING DISSOLVED IN THE REACTION MIXTURE UNDER THE CONDITIONS OF REACTION, SAID CONDITIONS OF REACTION INCLUDING A TEMPERATIRE OF ABOUT 100* TO 300*C., AND PRESSURES OF ABOUT 1500 TO 5000 P.S.I.G., AND RECOVERING DIETHYL KETONE IN GOOD YIELDS.
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |