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US3781307A
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US
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Ruthenium catalyzed process for the alkylation of ketones
Assignee: Rhone Poulenc SA
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Filing: 1969-08-11
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Granted: 1973-12-25
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Expires: 1989-08-11
Abstract
Abstract PRIMARY ALCOHOLS CONDENSE WITH KETONES CONTAINING AT LEAST ONE ALPHA HYDROGEN ATOM IN THE PRESENCE OF A BASIC COMPOUND AND A CATALYST BASED ON A NOBLE METAL OF GROUP VIII OF THE PERIODIC TABLE TO GIVE HIGHER KETONES.
Inventors
- 👤 P Chabardes
- 👤 Y Querou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:52
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/46; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |