US3138560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing palladium on carbon catalysts
Assignee: Engelhard Industries Inc
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Filing: 1959-12-17
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Granted: 1964-06-23
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Expires: 1979-12-17
Abstract
No abstract record available.
Inventors
- 👤 Carl D Keith
- 👤 Daniel L Bair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:27
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; B01J21/00; B01J21/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR PRODUCING A PALLADIUM ON CARBON CATALYST WHICH COMPRISES IMPREGNATING A CARBON SUPPORT WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE +2 VALENCE PALLADIUM COMPOUND CONTAINING A HALOGEN OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, THE AQUEOUS SOLUTION ALSO CONTAINING A PER OXYGEN COMPOUND AS AN OXIDIZING AGENT, THE CARBON SUPPORT INDICATING A PH GREATER THAN ABOUT 4.5 WHEN DISPERSED IN PURE WATER, WHEREBY THE PALLADIUM COMPOUND IS HYDROLYZED ON THE CARBON AND THE PALLADIUM ON THE CARBON IS SUBSEQUENTLY REDUCED.
Claim 2
Dependent Claim
83 words
A PROCESS FOR PRODUCING A PALLADIUM ON CARBON CATALYST WHICH COMPRISES IMPREGNATING A CARBON SUPPORT WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE +2 VALENCE PALLADIUM COMPOUND CONTAINING A HALOGEN OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, THE AQUEOUS SOLUTION ALSO CONTAINING A PER OXYGEN COMPOUND AS AN OXIDIZING AGENT, THE CARBON SUPPORT INDICATING A PH GREATER THAN ABOUT 4.5 WHEN DISPERSED IN PURE WATER, WHEREBY THE PALLADIUM COMPOUND IS HYDROLYZED ON THE CARBON AND THE PALLADIUM ON THE CARBON IS SUBSEQUENTLY REDUCED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |