US3631073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for oxidation of carbon monoxide
Assignee: Engelhard Minerals and Chemicals Corp
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Filing: 1969-04-04
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Granted: 1971-12-28
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Expires: 1989-04-04
Abstract
Abstract AN IMPROVED PROCESS FOR THE SELECTIVE OXIDATION OF CARBON MONOXIDE CONTAINED IN FEED GASES FROM A STEAM REFORMER-CONVERTER WHEREIN THE FEED GASES IN ADMIXTURE WITH OXYGEN ARE CONTACTED WITH A PLATINUM GROUP METAL CATALYST AND THE ACTIVITY OF THE CATALYST FOR THE SELECTIVE OXIDATION REACTION IS MAINTAINED BY PERIODICALLY TREATING DEACTIVATED CATALYST WITH THE SELECTED OXIDATION REACTION EFFUENT GASES CONTAINING LESS THAN 50 P.P.M. CARBON MONOXIDE AT A TEMPERATURE OF 75* TO 200*C.
Inventors
- 👤 Johann G E Cohn
- 👤 Otto J Adlhart
- 👤 Walter Egbert Jr
- 👤 Heinrich K Straschil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:40
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/025; B; B01; B01J; B01J23/00; B01J23/90; B01J23/96; 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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |