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US2663740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of aromatic hydrocarbons
Assignee: Hercules Powder Co
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Filing: 1952-03-05
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Granted: 1953-12-22
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Expires: 1972-03-05
Abstract
No abstract record available.
Inventors
- 👤 George M Calhoun
- 👤 John E Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:04
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C407/00; C07C409/10; C07C409/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE PROCESS OF OXIDIZING AN ALKYL-SUBTITUTED AROMATIC ORGANIC COMPOUND TO A TERTIARY ORGANIC HYDROPEROXIDE WHICH COMPRISES PASSING, WITH INTIMATE CONTACT, AN OXYGEN-CONTAINING GAS THROUGH THE AROMATIC ORGANIC COMPOUND, IN THE LIQUID PHASE, AT A TEMPERATURE BETWEEN 100* C. AND 130* C. UNDER A PRESSURE OF FROM ABOUT 30 P.S.I. TO ABOUT 500 P.S.I., IN THE PRESENCE OF AN AQUEOUS MEDIUM SELECTED FROM THE GROUP CONSISTING OF LIQUID WATER AND AQUEOUS ALKALI, THE RATIO OF THE AQUEOUS MEDIUM TO THE AROMATIC ORGANIC COMPOUND BEING BETWEEN 1:50 AND 1:3 BY VOLUME, AND THE AROMATIC ORGANIC COMPOUND AND THE TERTIARY ORGANIC HYDROPEROXIDE HAVING, RESPECTIVELY, THE STRUCTURAL FORMULAE
Claim 2
Dependent Claim
104 words
THE PROCESS OF OXIDIZING AN ALKYL-SUBTITUTED AROMATIC ORGANIC COMPOUND TO A TERTIARY ORGANIC HYDROPEROXIDE WHICH COMPRISES PASSING, WITH INTIMATE CONTACT, AN OXYGEN-CONTAINING GAS THROUGH THE AROMATIC ORGANIC COMPOUND, IN THE LIQUID PHASE, AT A TEMPERATURE BETWEEN 100* C. AND 130* C. UNDER A PRESSURE OF FROM ABOUT 30 P.S.I. TO ABOUT 500 P.S.I., IN THE PRESENCE OF AN AQUEOUS MEDIUM SELECTED FROM THE GROUP CONSISTING OF LIQUID WATER AND AQUEOUS ALKALI, THE RATIO OF THE AQUEOUS MEDIUM TO THE AROMATIC ORGANIC COMPOUND BEING BETWEEN 1:50 AND 1:3 BY VOLUME, AND THE AROMATIC ORGANIC COMPOUND AND THE TERTIARY ORGANIC HYDROPEROXIDE HAVING, RESPECTIVELY, THE STRUCTURAL FORMULAE
References Cited (Backward Citations)
GB610293A
Cited
US2548435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |