Patent US3781223A successfully refreshed from Google Patents.
US3781223A
Expired / Lapsed
US
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Catalyst for oxidative dehydrogenation
Assignee: Phillips Petroleum Co
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Filing: 1971-05-06
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Granted: 1973-12-25
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Expires: 1991-05-06
Abstract
Abstract ORGANIC COMPOUNDS ARE DEHYDROGENATED TO COMPOUNDS HAVING A HIGHER DEGREE OF UNSATURATION BY CONTACTING THE FEEDSTOCK IN THE VAPOR PHASE IN THE PRESENCE OF AN OXYGEN-CONTAINING GAS WITH A CATALYST COMPRISING AT LEAST ONE OF NICKEL, COBALT OR IRON IN ASSOCIATION WITH TIN AND PHOSPHORUS. REPRESENTATIVE OF SUCH CONVERSIONS IS THE OXIDATIVE DEHYDROGENATION OF BUTANE TO BUTENES AND BUTADIENE, ISOPENTANE TO ISOAMYLENES AND ISOPRENE, AND BUTENES TO BUTADIENE. THE CONVERSION PRODUCTS ARE VALUABLE COMPOUNDS PARTICULARLY USEFUL AS INTERMEDIATES FOR THE PREPARATION OF POLYMERIC MATERIALS SUCH AS SYNTHETIC RUBBERS AND THE LIKE.
Inventors
- 👤 D Walker
- 👤 F Farha
- 👤 B Bertus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:18
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/835; B01J23/80; B01J23/90; B01J23/94; B01J27/00; B01J27/14; B01J27/16; B01J27/18; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |