US3300516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of an aromatic compound
Assignee: Sinclair Research Inc
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Filing: 1963-04-03
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Granted: 1967-01-24
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Expires: 1983-04-03
Abstract
No abstract record available.
Inventors
- 👤 Vrbaski Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:28
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR THE CATALYTIC VAPOR PHASE OXIDATION OF AN ORTHO-(DI-LOWER ALKYL) BENZENE TO THE CORRESPONDING ANHYDRIDE WHICH COMPRISES REACTING SAID ORTHO-(DI-LOWER ALKYL) BENZENE IN THE VAPOR PHASE AT A TEMPERATURE FROM ABOUT 300 TO 600*C. WITH MOLECULAR OXYGEN IN THE PRESENCE OF A FUSED VANADIUM PENTOXIDE OXIDATION CATALYST, SAID CATALYST BEING PROVIDED WITH A PROMOTIONAL AMOUNT OF AN OXIDE OF A GROUP VB METAL HAVING AN ATOMIC NUMBER IN THE RANGE OF 41 TO 73.
Claim 2
Dependent Claim
76 words
A PROCESS FOR THE CATALYTIC VAPOR PHASE OXIDATION OF AN ORTHO-(DI-LOWER ALKYL) BENZENE TO THE CORRESPONDING ANHYDRIDE WHICH COMPRISES REACTING SAID ORTHO-(DI-LOWER ALKYL) BENZENE IN THE VAPOR PHASE AT A TEMPERATURE FROM ABOUT 300 TO 600*C. WITH MOLECULAR OXYGEN IN THE PRESENCE OF A FUSED VANADIUM PENTOXIDE OXIDATION CATALYST, SAID CATALYST BEING PROVIDED WITH A PROMOTIONAL AMOUNT OF AN OXIDE OF A GROUP VB METAL HAVING AN ATOMIC NUMBER IN THE RANGE OF 41 TO 73.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |