Patent US2981751A successfully refreshed from Google Patents.
US2981751A
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Oxidation with a calcined solid catalyst
Assignee: Sinclair Refining Co
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Filing: 1958-02-25
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Granted: 1961-04-25
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Expires: 1978-02-25
Abstract
No abstract record available.
Inventors
- 👤 Willis C Keith
- 👤 Carl D Keith
- 👤 Jr Emmett H Burk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:14
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265; B; B01; B01J; B01J21/00; B01J23/00; B01J23/70; B01J23/74; B01J23/75; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A METHOD FOR THE OXIDATION OF A BENZENE COMPOUND HAVING 1 TO 6 CARBON ATOMS IN A SIDE CHAIN SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL AND PARTIALLY OXIDIZED ALKYL CHAINS, THE STEPS COMPRISING CONTACTING SAID COMPOUND IN THE LIQUID PHASE AND IN THE PRESENCE OF MOLECULAR OXYGEN WITH A CALCINED SOLID OXIDATION CATALYST CONTAINING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE SILICATES AND ALUMINATES OF CATALYTIC OXIDATION PROMOTING METALS HAVING AN ATOMIC NUMBER OF 24 TO 28, SAID CATALYST BEING OBTAINED BY CALCINATION AT A TERMPERATURE OF ABOUT 250 TO 700*C. OF A HYDROUS SOLID INORGANIC BASE SELECTED FROM THE GROUP CONSISTING OF ALUMINA AND SILICA AND CONTAINING A CATALYTIC AMOUNT OF THE PROMOTING METAL COMPONENT, SAID CONTACT BEING AT A TEMPERATURE OF ABOUT 50 TO 350*C. AND UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE LIQUID PHASE.
Claim 2
Dependent Claim
142 words
IN A METHOD FOR THE OXIDATION OF A BENZENE COMPOUND HAVING 1 TO 6 CARBON ATOMS IN A SIDE CHAIN SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL AND PARTIALLY OXIDIZED ALKYL CHAINS, THE STEPS COMPRISING CONTACTING SAID COMPOUND IN THE LIQUID PHASE AND IN THE PRESENCE OF MOLECULAR OXYGEN WITH A CALCINED SOLID OXIDATION CATALYST CONTAINING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE SILICATES AND ALUMINATES OF CATALYTIC OXIDATION PROMOTING METALS HAVING AN ATOMIC NUMBER OF 24 TO 28, SAID CATALYST BEING OBTAINED BY CALCINATION AT A TERMPERATURE OF ABOUT 250 TO 700*C. OF A HYDROUS SOLID INORGANIC BASE SELECTED FROM THE GROUP CONSISTING OF ALUMINA AND SILICA AND CONTAINING A CATALYTIC AMOUNT OF THE PROMOTING METAL COMPONENT, SAID CONTACT BEING AT A TEMPERATURE OF ABOUT 50 TO 350*C. AND UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE LIQUID PHASE.
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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |