US2753377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of methyl and methylene groups to carbonyl groups
Assignee: ExxonMobil Oil Corp
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Filing: 1952-01-05
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Granted: 1956-07-03
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Expires: 1972-01-05
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:22
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/37; C07C45/39; C07C45/33; C07C45/34; C07C45/35; C07C45/36; C07C45/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR OXIDIZING AN AROMTAIC HYDROCARBON CONTAINING A RADICAL IN ALPHA POSITION TO A CARBON TO CARBON UNSATURATED LINKAGE AND SELECTED FROM THE GROUP CONSISTING OF METHYL AND METHYLENE RADICALS, WHICH COMPRISES INTIMATELY CONTACTING SAID AROMATIC HYDROCARBON IN THE VAPOR STATE AT A TEMPERATURE BETWEEN ABOUT 395* C. AND ABOUT 405* C. WITH A QUANTITY OF GAS CONTAINING FREE OXYGEN SUCH THAT THE VOLUME RATIO OF AROMATIC HYDROCARBON TO SAID GAS IS BETWEEN ABOUT 1:1 AND ABOUT 1:9 IN THE PRESENCE OF A TELLURIUM OXIDE CATALYST, WHEREBY SAID RADICAL IS SELECTIVELY OXIDIZED TO A CARBONYL GROUP.
Claim 2
Dependent Claim
97 words
A PROCESS FOR OXIDIZING AN AROMTAIC HYDROCARBON CONTAINING A RADICAL IN ALPHA POSITION TO A CARBON TO CARBON UNSATURATED LINKAGE AND SELECTED FROM THE GROUP CONSISTING OF METHYL AND METHYLENE RADICALS, WHICH COMPRISES INTIMATELY CONTACTING SAID AROMATIC HYDROCARBON IN THE VAPOR STATE AT A TEMPERATURE BETWEEN ABOUT 395* C. AND ABOUT 405* C. WITH A QUANTITY OF GAS CONTAINING FREE OXYGEN SUCH THAT THE VOLUME RATIO OF AROMATIC HYDROCARBON TO SAID GAS IS BETWEEN ABOUT 1:1 AND ABOUT 1:9 IN THE PRESENCE OF A TELLURIUM OXIDE CATALYST, WHEREBY SAID RADICAL IS SELECTIVELY OXIDIZED TO A CARBONYL GROUP.
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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) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |