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US2963509A
Expired / Lapsed
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Process for oxidation of mono-alkyl benzene
Assignee: Mid Century Corp
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Filing: 1958-03-10
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Granted: 1960-12-06
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Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Robert S Barker
- 👤 Saffer Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:53
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR THE PREPARATION OF BENZOIC ACID WHICH COMPRISES REACTING A MONO-ALKYLBENZENE HYDROCARBON HAVING FROM 1 TO 8 CARBON ATOMS IN THE ALKYL GROUP IN THE LIQUID PHASE AT A TEMPERATURE BETWEEN ABOUT 120* AND ABOUT 275*C. AND A PRESSURE BETWEEN ATMOSPHERIC AND 1500 P.S.I.G. WITH MOLECULAR OXYGEN IN A SOLVENT WHICH IS ESSENTIALLY BENZOIC ACID AND IN THE CONJOINT PRESENCE OF BROMINE AND A HEAVY METAL OXIDATION CATALYST.
Claim 2
Dependent Claim
70 words
A PROCESS FOR THE PREPARATION OF BENZOIC ACID WHICH COMPRISES REACTING A MONO-ALKYLBENZENE HYDROCARBON HAVING FROM 1 TO 8 CARBON ATOMS IN THE ALKYL GROUP IN THE LIQUID PHASE AT A TEMPERATURE BETWEEN ABOUT 120* AND ABOUT 275*C. AND A PRESSURE BETWEEN ATMOSPHERIC AND 1500 P.S.I.G. WITH MOLECULAR OXYGEN IN A SOLVENT WHICH IS ESSENTIALLY BENZOIC ACID AND IN THE CONJOINT PRESENCE OF BROMINE AND A HEAVY METAL OXIDATION CATALYST.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |