Patent US2156353A successfully refreshed from Google Patents.
US3666412A
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Dispersed phase activated and stabilized metal catalysts
Assignee: EIDP Inc
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Filing: 1968-10-21
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Granted: 1972-05-30
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Expires: 1988-10-21
Abstract
Abstract CATALYTIC SYSTEMS COMPRISING A CATALYTIC METAL, SUCH AS PLATINUM OR NICKEL, WHICH HAVE DISPERSED THEREIN SMALL PARTICLES OF A NON-METAL, SUCH AS THORIA, SILICA, OR ZIRCONIA, HAVE BEEN FOUND TO HAVE GOOD ACTIVITY AND DURABILITY THE CATALYST SYSTEMS ARE USEFUL IN THOSE ENVIRONMENTS WHERE METAL CATALYSTS ARE CONVENTIONALLY USED SUCH AS IN AMMONIA OXIDATIONS AND METHANE REFORMING.
Inventors
- 👤 Donald M Sowards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:31
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |