US3759840A
Expired / Lapsed
US
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Catalyst for hydrocarbon oxidation
Assignee: Scientific Design LLC
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Filing: 1970-09-28
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Granted: 1973-09-18
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Expires: 1990-09-28
Abstract
Abstract A CATALYST USEFUL FOR THE OXIDATION OF ORGANIC COMPOUNDS, PARTICULARLY THE PARTIAL OXIDATION OF BENZENE WITH MOLECULAR OXYGEN TO PRODUCE MALEIC ANHYDRIDE, COMPRISES THE OXIDES OF MOLYBENUM AND VANADIUM AND A MINOR AMOUNT OF BORON. A PREFERRED FORM OF THE CATALYST FURTHER INCLUDES PHOSPHORUS AND AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF COBALT, NICKEL AND IRON, AND SODIUM.
Inventors
- 👤 R Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:56
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198; B01J27/199; B01J23/00; B01J23/16; B01J23/24; B01J23/28; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; C; C07; C07C; C07C51/00; C07C51/16; C07C51/31; C07C51/313; B01J2523/00
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |