US3658875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing aromatic aldehydes and the corresponding alcohols
Assignee: Rhone Poulenc SA
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Filing: 1969-03-13
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Granted: 1972-04-25
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Expires: 1989-03-13
Abstract
Abstract MIXTURES OF AROMATIC ALDEHYDES AND THE CORRESPONDING ALCHOLS ARE MADE BY HEATING THE CORRESPONDING AROMATIC HYDROPEROXIDE IN THE PRESENCE OF AN ORGANIC BASE AND A CHROMIUM COMPOUND.
Inventors
- 👤 Jean Claude Brunie
- 👤 Noel Crenne
- 👤 Michel Jouffret
- 👤 Michel Costantini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:24
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/51; C07C45/53; C07C407/00; C07C407/003; C07C409/00; C07C409/02; C07C409/04; C07C409/08
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |