US3801672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidative dehydrogenation process and catalysts
Assignee: Texas Petrochemicals Corp
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Filing: 1972-12-20
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Granted: 1974-04-02
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Expires: 1992-12-20
Abstract
Abstract HYDROCARBONS CAN BE DEHYDROGENATED BY OXIDATIVE DEHYDROGENATION OVER UNIQUE CATALYST THAT CONTAINS AT LEAST MG, CR, AND O PREFERABLY AS THE OXIDES TO OBTAIN HIGH YIELDS OF THE DESIRED PRODUCTS, E.G., N-BTANE BUTENES AND BUTADIENES. THE ADDITION OF S, W OR A GROUP IV ELEMENT FURTHER ENHENCES THE YIELDS. A PRINCIPAL ADVANTAGE OF THE PRESENT PROCESS OVER CONVENTIONAL DEHYDROGENATION IS THE SUCCESSFUL USE OF THE ALKANE IN A CONTINUOUS PROCESS TO GIVE RESULTS AS GOOD OR BETTER THAN THOSE PRESENTLY OBTAINED IN CYCLIC NON-OXIDATIVE DEHYDROGENATION PROCESSES.
Inventors
- 👤 L Bajars
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:21
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J23/30
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |