Patent US3681258A successfully refreshed from Google Patents.
US3681258A
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Activation of an oxidative dehydrogenation catalyst
Assignee: Phillips Petroleum Co
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Filing: 1969-11-24
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Granted: 1972-08-01
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Expires: 1989-11-24
Abstract
Abstract OXIDATIVE DEHYDROGENATION CATALYSTS CONSISTING ESSENTIALLY OF PHOSPHORUS, TIN, A METAL SELECTD FROM THE GROUP CONSISTING OF GROUP IA METALS AND GROUP IIA METALS, AND OXYGEN, WHEREIN THE PHOSPHORUS IS PRESENT IN THE RANGE OF 0.1 TO 16 WEIGHT PERCENT, THE TIN IS PRESENT IN THE RANGE OF 15 TO 75 WEIGHT PERCENT, THE GROUP IA OR GROUP IIA METAL IS PRESENT IN THE RANGE OF 0.1 TO 10 WEIGHT PERCENT AND THE OXYGEN IS PRESENT IN SUFFICENT QUANTITY TO PRODUCE THE REMAINING TOTAL CATALYST COMPOSITION, ARE ACTIVATED BY CONTACTING THE FORMED PARTICLES OF CATALYST WITH WATER.
Inventors
- 👤 Emory W Pitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:30
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1813; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 0
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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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |