US2887511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aromatic acids by oxidation
Assignee: Union Oil Company of California
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Filing: 1953-01-26
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Granted: 1959-05-19
•
Expires: 1973-01-26
Abstract
No abstract record available.
Inventors
- 👤 William L Wasley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:42
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR PRODUCING AROMATIC MONO-CARBOXYLIC ACIDS WHICH COMPRISES OXIDIZING AN AROMATIC COMPOUND OF THE CLASS CONSISTING OF ALKYL SUBSTITUTED BENZENES AND ALKYL SUBSTITUTED NAPTHYALENES IN WHICH AT LEAST ONE ALKYL SUBSTITUENT IS A METHYL GROUP, IN THE LIQUID PHASE AT TEMPREATURES BETWEEN ABOUT 100* C. AND 160* C. WITH A GAS CONTAINING FREE OXYGEN IN THE PRESENCE OF A THALLOUS COMPOUND DISSOLVED IN THE REACTION MIXTURE.
Claim 2
Dependent Claim
67 words
A PROCESS FOR PRODUCING AROMATIC MONO-CARBOXYLIC ACIDS WHICH COMPRISES OXIDIZING AN AROMATIC COMPOUND OF THE CLASS CONSISTING OF ALKYL SUBSTITUTED BENZENES AND ALKYL SUBSTITUTED NAPTHYALENES IN WHICH AT LEAST ONE ALKYL SUBSTITUENT IS A METHYL GROUP, IN THE LIQUID PHASE AT TEMPREATURES BETWEEN ABOUT 100* C. AND 160* C. WITH A GAS CONTAINING FREE OXYGEN IN THE PRESENCE OF A THALLOUS COMPOUND DISSOLVED IN THE REACTION MIXTURE.
References Cited (Backward Citations)
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US1771169A
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US1851362A
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US1815985A
Cited
US2245528A
Cited
US2353158A
Cited
US2578654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |