US3692701A
Expired / Lapsed
US
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Group viii metals on tin-containing supports dehydrogenation catalysts
Assignee: Phillips Petroleum Co
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Filing: 1970-07-15
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Granted: 1972-09-19
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Expires: 1990-07-15
Abstract
Abstract LONGEVITY OF CATALYST COMPOSITES COMPRISING SUPPORTED GROUP VIII METAL COMPOUNDS IS IMPROVED BY INCORPORATION OF A TIN COMPOUND INTO THE SUPPORT PRIOR TO CALCINATION OF THE SUPPORT. AFTER CALCINING OF THE SUPPORT, THE GROUP VIII METAL COMPONENTS ARE INCORPORATED BY CONVENTIONAL PROCEDURES. THE RESULTING CATALYSTS ARE ESPECIALLY USEFUL IN DEHYDROGENATION PROCESSES AND, IN ADDITION TO IMPROVED LONGEVITY, CAN BE REPEATEDLY REGENERATED TO A CONVERSION ACTIVITY COMMENSURATE WITH FRESH CATALYSTS.
Inventors
- 👤 E O Box Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/835; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/626; C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337; Y; Y10; Y10S; Y10S502/00; Y10S502/524; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
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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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |