US2950260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of activating nickel-aluminum catalysts
Assignee: EIDP Inc
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Filing: 1957-12-09
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Granted: 1960-08-23
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Expires: 1977-12-09
Abstract
No abstract record available.
Inventors
- 👤 Chester K Rosenbaum
- 👤 John C Tallman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/94; B01J23/70; B01J23/74; B01J23/755; B01J25/00; B01J25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE PROCESS FOR ACTIVATING GRANULAR NICKEL-ALUMINUM ALLOY CATALYST CONTAINING 35 TO 60% NICKEL, THE BALANCE CONSISTING PRINCIPALLY OF ALUMINUM, BY REDUCING ITS ALUMINUM CONTENT FROM 5 TO 30 COMPRISING TREATING THE SAID ALLOY WITH A DILUTE AQUEOUS SOLUTION OF AN ALKALI SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE AT A TEMPERATURES NOT EXCEEDING 35*C. WHILE CONTROLLING THE CONTACT TIME SO THAT NOT MORE THAN ABOUT 1.5 MOLECULAR PROPORTIONS OF HYDROGEN ARE EVOLVED PER MOLE OF ALKALI IN THE CONTACTING SOLUTION.
Claim 2
Dependent Claim
84 words
THE PROCESS FOR ACTIVATING GRANULAR NICKEL-ALUMINUM ALLOY CATALYST CONTAINING 35 TO 60% NICKEL, THE BALANCE CONSISTING PRINCIPALLY OF ALUMINUM, BY REDUCING ITS ALUMINUM CONTENT FROM 5 TO 30 COMPRISING TREATING THE SAID ALLOY WITH A DILUTE AQUEOUS SOLUTION OF AN ALKALI SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE AT A TEMPERATURES NOT EXCEEDING 35*C. WHILE CONTROLLING THE CONTACT TIME SO THAT NOT MORE THAN ABOUT 1.5 MOLECULAR PROPORTIONS OF HYDROGEN ARE EVOLVED PER MOLE OF ALKALI IN THE CONTACTING SOLUTION.
References Cited (Backward Citations)
US2604455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |