US3580969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation of olefins
Assignee: Phillips Petroleum Co
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Filing: 1968-01-08
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Granted: 1971-05-25
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Expires: 1988-01-08
Abstract
Abstract IMPROVEMENTS IN HYDROCARBON DEHYDROGENATION ARE REALIZED BY THE USE OF A CATALYST COMPRISING TIN AND/OR A TIN COMPOUND SUPPORTED ON AN ALUMINUM PHOSPHATE.
Inventors
- 👤 George J Nolan
- 👤 Vernon C F Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:09
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1813
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |