Patent US3152998A successfully refreshed from Google Patents.
US3152998A
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Nickel-copper-chromia catalyst and the preparation thereof
Assignee: Texaco Inc
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Filing: 1960-06-08
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Granted: 1964-10-13
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Expires: 1980-06-08
Abstract
No abstract record available.
Inventors
- 👤 Philip H Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:10
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/023; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; C07D241/00; C07D241/02; C07D241/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
A PHYSICALLY STABLE, CATALYTICALLY ACTIVE, PREFORMED PELLETED NICKEL, COPPER, CHROMIUM CATALYST COMPOSITION RESISTANT TO SOFTENING BY WATER, AMMONIA AND MIXTURES THEREOF, SAID CATALYST HAVING BEEN PREPARED BY PELLETING A MIXTURE OF OXIDES OF NICKEL, COPPER AND CHROMIUM, AND THEN REDUCING SAID PELLETED MIXTURE IN THE PRESENCE OF HYDROGEN AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 250* TO ABOUT 400*C. UNTIL THE PERCENTAGE OF REDUCED NICKEL IS AT LEAST 30%, THE PROPORTIONS OF THE METALS IN THE MIXTURE TO EACH OTHER, CALCULATED ON AN OXIDE-FREE BASIS, BEING 60 TO 85 MOL PERCENT NICKEL, 14 TO 37 MOL PERCENT COPPER AND 1 TO 5 MOL PERCENT CHROMIUM.
References Cited (Backward Citations)
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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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |