Patent US3560404A successfully refreshed from Google Patents.
US3560404A
Expired / Lapsed
US
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Reactivating pyrophoric type catalysts in an organic solvent
Assignee: VARTA AG
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Filing: 1967-12-20
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Granted: 1971-02-02
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Expires: 1987-12-20
Abstract
Abstract PROCESS FOR THE REACTIVATION OF DEACTIVATED HYDROGENATION CATALYST WHICH AS MAIN CATALYTIC COMPONENTS CONTAIN CATALYTICALLY ACTIVE FORMS OF THE METALLIC ELEMENTS IRON, NICKEL AND COBALT COMPRISING INTRODUCING THE CATALYST TO BE REACTIVATED INTO A NON-AQUEOUS ORGANIC LIQUID AND CONTACTING SUCH CATALYST THEREIN WITH A STRONG REDUCING AGENT, SUCH AS, HYDRAZINE, BOROHYDRIDES OR HYPOPHOSPHITES UNTIL DEVELOPMENT OF GASEOUS HYDROGEN OCCURS.
Inventors
- 👤 Margarete Jung
- 👤 Hans H Von Dohren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:13
CPC Classifications
B; B01; B01J; B01J25/00; B01J25/04
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |