Patent US2967835A successfully refreshed from Google Patents.
US2967835A
Expired / Lapsed
US
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Hydrogenation catalyst
Assignee: GAF Chemicals Corp
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Filing: 1957-08-01
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Granted: 1961-01-10
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Expires: 1977-08-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene V Hort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A PROCESS FOR PRODUCING A HYDROGENATION CATALYST COMPRISING TREATING AN AQUEOUS DISPERSION CONTAINING A COPPER COMPOUND AND METALLIC PALLADIUM WITH A REDUCING AGENT TO PRECIPITATE METALLIC COOPER IN SITU ON THE PALLADIUM.
Claim 2
Dependent Claim
32 words
A PROCESS FOR PRODUCING A HYDROGENATION CATALYST COMPRISING TREATING AN AQUEOUS DISPERSION CONTAINING A COPPER COMPOUND AND METALLIC PALLADIUM WITH A REDUCING AGENT TO PRECIPITATE METALLIC COOPER IN SITU ON THE PALLADIUM.
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) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |