Patent US3701810A successfully refreshed from Google Patents.
US3701810A
Expired / Lapsed
US
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Process for the production of methyl ethyl ketone from n-butene
Assignee: Maruzen Petrochemical Co Ltd
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Filing: 1968-12-04
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Granted: 1972-10-31
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Expires: 1988-12-04
Abstract
Abstract PRODUCING METHYL ETHYL KETONE AT A HIGH SPACE-TIME YIELD WITH REDUCED FORMALTION OF BY-PRODCUTS COMPRISING CONTACTING N-BUTENE WITH AN AQUEOUS CATALYST SOLUTION CONTAINING A WATER-SOLUBLE CHLORIDE COMPOUND, WATERSOLUBLE PALLADIUM COMPOUND AND FERRIC SULFATE, THE CHLORINE ION CONTENT (PER LITER) OF SAID AQUEOUS SOLUTION BEING 0.005-0.15 GRAM-ION AND THE CHEMICAL EQUIVALENT RATIO OF CHLORINE TO PALLADIUM IN THE SOLUTION BEING WITHIN THE RANGE 1.5/1-20/19 THE NOVEL CATALYST SOLUTION DESCRIBED ALSO FROM PART OF THE PRESEN INVENTION.
Inventors
- 👤 Hiroshi Hasegawa
- 👤 Makoto Iriuchijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:40
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C45/00; C07C45/27; C07C45/30
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |