US3190839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing raney-nickel hydrogenation catalysts of selective activity
Assignee: Kali Chemie AG
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Filing: 1961-10-03
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Granted: 1965-06-22
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Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Hauschild Ulrich
- 👤 Stahl Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:54
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/023; B; B01; B01J; B01J25/00; B01J25/02; Y; Y10; Y10S; Y10S502/00; Y10S502/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR THE PREPARATION OF SELECTIVELY ACTIVE RANEY-NICKEL HYDROGENATION CATALYST FOR PREPARATION OF H2O3 OVER AN ANTHRAQUINONE COMPOUND WITHOUT HYDROGENATION IN THE NUCLEUS OF SAID ANTHRAQUINONE COMPOUND, COMPRISING TREATMENT, PRIOR TO THE HYDROGENATION, OF A CONVENTIONAL RANEY-NICKEL HYDROGENATION CATALYST WITH AN ALDEHYDE OF THE FORMULA
Claim 2
Dependent Claim
46 words
A PROCESS FOR THE PREPARATION OF SELECTIVELY ACTIVE RANEY-NICKEL HYDROGENATION CATALYST FOR PREPARATION OF H2O3 OVER AN ANTHRAQUINONE COMPOUND WITHOUT HYDROGENATION IN THE NUCLEUS OF SAID ANTHRAQUINONE COMPOUND, COMPRISING TREATMENT, PRIOR TO THE HYDROGENATION, OF A CONVENTIONAL RANEY-NICKEL HYDROGENATION CATALYST WITH AN ALDEHYDE OF THE FORMULA
References Cited (Backward Citations)
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US2760994A
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US2730533A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |