Patent US3804779A successfully refreshed from Google Patents.
US3804779A
Expired / Lapsed
US
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Carbon supported palladium catalyst
Assignee: Phillips Petroleum Co
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Filing: 1972-10-02
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Granted: 1974-04-16
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Expires: 1992-10-02
Abstract
Abstract PALLADIUM ON CARRBON HYDROGENATION CATALYSTS OF LOW SULFUR CONTENT EXHIBITING GOOD STABILITY TOWARD POISONS AND HAVING HIGH HYDROGENATION ACTIVITY AND HIGH SPECIFICITY ARE PREPARED BY IMPREGNATING CARBN WITH A SLIGHTLY ACIDIC SUSPENSION OF A PALLADIUM COMPOUND, REDUCING AND TREATING THE PALLADIUM ON CARBON CATALYST UNDER BASIC CONDITIONS.
Inventors
- 👤 R Kent
- 👤 R Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:15
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44
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) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |