US3702875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification of oxidative dehydrogenation catalysts
Assignee: Texas Petrochemicals Corp
•
Filing: 1970-03-02
•
Granted: 1972-11-14
•
Expires: 1990-03-02
Abstract
Abstract OXIDATIVE DEHYDROGENATION OF ORGANIC C OMPOUNDS WITH CATALYST COMPRISING A METAL FERRITE WITH COBALT OR NICKEL METAL COMPOUND AS A CATALYST MODIFIER. FOR EXAMPLE, BUTENE IS OXDATIVELY DEHYDROGENATED TO BUTADIENE-1,3 WITH A CATALYST COMPRISING MANGANESE FERRITE MODIFIED WITH A MINOR AMOUNT OF COBALT OXIDE.
Inventors
- 👤 Harold E Manning
- 👤 Marvin Z Woskow
- 👤 Harold F Christmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:31
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/54; C07C5/56; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/76; C07C5/48
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |