Patent US2708187A successfully refreshed from Google Patents.
US2708187A
Expired / Lapsed
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Method of stabilizing metal catalysts
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1951-03-02
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Granted: 1955-05-10
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Expires: 1971-03-02
Abstract
No abstract record available.
Inventors
- 👤 Kenneth K Kearby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:17
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE METHOD OF PREPARING A CATALYST FOR NAPHTHA REFORMING WHICH COMPRISES SIMULTANEOUSLY DEPOSITING UPON A CATALYST SUPPORTING MATERIAL PREPARED FROM A DRIED ACTIVE ALUMINA FROM 0.05% TO 2% OF COLLOIDAL ALUMINA AS A PROTECTIVE COLLOID AND FROM 0.05 TO 2% OF METALLIC PLATINUM COLLOIDALLY DISPERSED THEREIN, SUBSEQUENTLY TREATING THIS COMPOSITION WITH HYDROGEN FLUORIDE TO GIVE A CATALYST CONTAINING FROM 0.1 TO 2% OF FLUORIDE BY WEIGHT BASED ON DRIED ALUMINA, THEN DRYING, CALCINING AND REDUCING WITH HYDROGEN BEFORE USE.
Claim 2
Independent Claim
79 words
THE METHOD OF PREPARING A CATALYST FOR NAPHTHA REFORMING WHICH COMPRISES SIMULTANEOUSLY DEPOSITING UPON A CATALYST SUPPORTING MATERIAL PREPARED FROM A DRIED ACTIVE ALUMINA FROM 0.05% TO 2% OF COLLOIDAL ALUMINA AS A PROTECTIVE COLLOID AND FROM 0.05 TO 2% OF METALLIC PLATINUM COLLOIDALLY DISPERSED THEREIN, SUBSEQUENTLY TREATING THIS COMPOSITION WITH HYDROGEN FLUORIDE TO GIVE A CATALYST CONTAINING FROM 0.1 TO 2% OF FLUORIDE BY WEIGHT BASED ON DRIED ALUMINA, THEN DRYING, CALCINING AND REDUCING WITH HYDROGEN BEFORE USE.
References Cited (Backward Citations)
US2478916A
Cited
US2589189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |