US3093597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of ammonia oxidation catalyst
Assignee: Phillips Petroleum Co
•
Filing: 1960-06-20
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Granted: 1963-06-11
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Expires: 1980-06-20
Abstract
No abstract record available.
Inventors
- 👤 Oliver W Hill
- 👤 John C Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:00
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/96
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
A METHOD FOR THE REGENERATION OF AN AMMONIA OXIDATION CATALYST GAUZE CONTAINING A METAL OF THE PLATINUM GROUP TO REMOVE SOLID CATALYST PARTICLES FROM THE SURFACE THEREOF WHICH COMPRISES SUBJECTING THE SAME TO ULTRASONIC VIBRATIONS FOR A TIME SUFFICIENT TO ACCOMPLISH A DESIRED REGENERATION THEREOF AND THEN FURTHER REGENERATING SAID CATALYST BY SUBJECTING THE SAME TO TREATMENT WITH AT LEAST ONE ACID SELECTED FROM THE GROUP CONSISTING OF HYDROFLUORIC, HYDROCHLORIC, SULFURIC, NITRIC, PHOSPHORIC AND FORMIC ACIDS FOR A TIME SUFFICIENT TO ACCOMPLISH THE DE-
References Cited (Backward Citations)
GB548960A
Cited
US2740762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |