US3560559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for oxidizing omicron-xylene,rho-xylene and cyclohexanol
Assignee: Marathon Oil Co
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Filing: 1964-11-04
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Granted: 1971-02-02
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Expires: 1984-11-04
Abstract
Abstract A PROCESS FOR OXIDIZING ALKYL AROMATIC OR CYCLOALIPHATIC HYDROCARBONS BY CONTACTING THEM WITH AN AQUEOUS SOLUTION OF AMMONIUM DICHROMATE AT ELEVATED TEMPERATURES. WHEN THE PH OF THE REACTION MEDIUM IS LESS THAN ABOUT 7, THE PRODUCT OF THE REACTION IS THE AMMONIUM SALT OF AN ORGANIC CARBOXYLIC ACID, WHICH, UPON ACIDIFICATION, YIELDS THE FREE ORGANIC CARBOXYLIC ACID. WHEN THE PH OF THE REACTION MEDIUM IS ABOVE ABOUT 7, THE OXIDATION PRODUCT IS THE AMMONIUM SALT OF AN ORGANIC CARBOXYLIC ACID AMIDE.
Inventors
- 👤 Alvin L Benham
- 👤 Dennis E Drayer
- 👤 Harold D Mcbride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:39
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/31
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |