US3235513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for activating raney alloys and solution useful for such process
Assignee: VARTA AG
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Filing: 1962-02-02
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Granted: 1966-02-15
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Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 Jung Margarete
- 👤 Hanns H Kroeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:05
CPC Classifications
B; B01; B01J; B01J25/00; B01J25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE PROCESS OF CONVERTING A RANEY METAL ALLOY HAVING A CATALYTICALLY ACTIVE COMPONENT AND A CATALYTICALLY INACTIVE COMPONENT INTO A CATALYST BY LEACHING THE INACTIVE COMPONENT FROM THE ALLOY WITH AN ACTIVATING SOLUTION CAPABLE OF DISSOLVING THE INACTIVE COMPONENT, COMPRISING THE STEP OF ADDING TO THE ACTIVATING SOLUTION A SUBSTANCE SELECTED FROM THE GROUP OF ALKALI METAL TARTRATE AND LOWER ALIPHATIC AMINO SEQUESTERING COMPOUNDS IN AN AMOUNT OF FROM 0.01 MOL TO 0.2 MOL PER MOL OF THE INACTIVE COMPONENT.
Claim 2
Dependent Claim
80 words
THE PROCESS OF CONVERTING A RANEY METAL ALLOY HAVING A CATALYTICALLY ACTIVE COMPONENT AND A CATALYTICALLY INACTIVE COMPONENT INTO A CATALYST BY LEACHING THE INACTIVE COMPONENT FROM THE ALLOY WITH AN ACTIVATING SOLUTION CAPABLE OF DISSOLVING THE INACTIVE COMPONENT, COMPRISING THE STEP OF ADDING TO THE ACTIVATING SOLUTION A SUBSTANCE SELECTED FROM THE GROUP OF ALKALI METAL TARTRATE AND LOWER ALIPHATIC AMINO SEQUESTERING COMPOUNDS IN AN AMOUNT OF FROM 0.01 MOL TO 0.2 MOL PER MOL OF THE INACTIVE COMPONENT.
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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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |