US3697445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High surface area nickel catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-10-06
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Granted: 1972-10-10
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Expires: 1990-10-06
Abstract
Abstract A STABILIZED HIGH SURFACE AREA NICKEL CATALYST WHICH IS PARTICULARLY USEFUL FOR REMOVING TRACE QUANITIES OF OXYGEN FROM INERT GASES IS DESCRIBED. THE NICKEL-SILICA CATALYST HAS A NICKEL SURFACE AREA GREATER THAN 70 M.2/G. AND A TOTAL SURFACE AREA IN THE RANGE OF ABOUT 225 M.2/G. TO ABOUT 300 M.2/G. THE ACTIVE CATALYST CONTAINS FROM ABOUT 25 WT. PERCENT TO ABOVE 50 WT. PERCENT NICKEL AND OF ITS TOTAL SILICA CONTENT 30 TO 90 WT. PERCENT IS DERIVED FROM PRECIPITATED SILICATE IONS.
Inventors
- 👤 James L Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:39
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/74; B01D53/86; B01D53/8671; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J35/00; B01J35/30; B01J35/391; B01J35/392; C; C01; C01B; C01B21/00; C01B21/02; C01B23/00; B01J21/00; B01J21/06; B01J21/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 0
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |