US2658875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel catalyst and preparation thereof
Assignee: Shell Development Co
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Filing: 1951-03-19
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Granted: 1953-11-10
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Expires: 1971-03-19
Abstract
No abstract record available.
Inventors
- 👤 Schuit George Cornelis Adriaan
- 👤 Jan Jacob Bernard Van Voorthu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:52
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR THE PRODUCTION OF A NICKLE CONTAINING CATALYST WHICH COMPRISES PRECIPITATING NICKLE HYDROXIDE AND HYDROUS SILICA, THE MOLECULAR RATIO OF THE AMOUNTS OF SILICA TO NICKLE APPLIED BEING AT LEAT 1:1, TREATING THE PRECIPITATE WITH WATER UNDER PRESSURE AT A TEMPERATURE ABOVE 100* C. UNTIL AT LEAST HALF OF THE NICKLE IS CONVERTED TO NICKLE MONTMORILLONITE, AND THEN SUBJECTING THE PRODUCT TO A REDUCTION TREATMENT AT A TEMPERATURE OF AT LEAST 425* C. UNTIL AT LEAST HALF BUT NOT ALL OF THE NICKLE OF THE NICKLE MONTMORILLONITE IS REDUCED TO METALLIC NICKLE.
Claim 2
Dependent Claim
94 words
A PROCESS FOR THE PRODUCTION OF A NICKLE CONTAINING CATALYST WHICH COMPRISES PRECIPITATING NICKLE HYDROXIDE AND HYDROUS SILICA, THE MOLECULAR RATIO OF THE AMOUNTS OF SILICA TO NICKLE APPLIED BEING AT LEAT 1:1, TREATING THE PRECIPITATE WITH WATER UNDER PRESSURE AT A TEMPERATURE ABOVE 100* C. UNTIL AT LEAST HALF OF THE NICKLE IS CONVERTED TO NICKLE MONTMORILLONITE, AND THEN SUBJECTING THE PRODUCT TO A REDUCTION TREATMENT AT A TEMPERATURE OF AT LEAST 425* C. UNTIL AT LEAST HALF BUT NOT ALL OF THE NICKLE OF THE NICKLE MONTMORILLONITE IS REDUCED TO METALLIC NICKLE.
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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |