Patent US2739944A successfully refreshed from Google Patents.
US2739944A
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US
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Stabilized metal catalysts for naphtha reforming
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-06-21
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Granted: 1956-03-27
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Expires: 1972-06-21
Abstract
No abstract record available.
Inventors
- 👤 Kenneth K Kearby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:00
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J27/00; B01J27/06; B01J27/128; B01J27/13; B01J21/00; B01J21/06; B01J21/08; B01J37/00; B01J37/02; B01J37/03; B01J37/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF PREPARING AN ALUMINA SUPPORTED CATALYST FOR THE TREATMENT AND CONVERSION OF HYDROCARBONS WHICH COMPRISES COLLOIDALLY DISPERSING FROM ABOUT 0.05 TO 2.0% OF METALLIC PLATINUM IN A HYDROUS ALUMINA BY SIMULTANEOUSLY PRECIPITATING A PLATINUM-CONTAINING DEPOSIT AND SAID ALUMINA FROM AN AQUEOUS SOLUTION OF PLATINUM AND ALUMINUM SALTS BY THE SEPARATE PRECIPITATING ACTION ON THESE SALTS OF A COMMON REAGENT, SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, AMMONIUM ACETATE, MAGNESIUM OXIDE, ANILINE, AND ALCOHOL, RECOVERING THEREFROM PLATINUM-CONTAINING ALUMINA, AND REDUCING THE PLATINUM THEREIN TO THE FORM OF THE FREE METAL.
Claim 2
Independent Claim
92 words
THE METHOD OF PREPARING AN ALUMINA SUPPORTED CATALYST FOR THE TREATMENT AND CONVERSION OF HYDROCARBONS WHICH COMPRISES COLLOIDALLY DISPERSING FROM ABOUT 0.05 TO 2.0% OF METALLIC PLATINUM IN A HYDROUS ALUMINA BY SIMULTANEOUSLY PRECIPITATING A PLATINUM-CONTAINING DEPOSIT AND SAID ALUMINA FROM AN AQUEOUS SOLUTION OF PLATINUM AND ALUMINUM SALTS BY THE SEPARATE PRECIPITATING ACTION ON THESE SALTS OF A COMMON REAGENT, SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, AMMONIUM ACETATE, MAGNESIUM OXIDE, ANILINE, AND ALCOHOL, RECOVERING THEREFROM PLATINUM-CONTAINING ALUMINA, AND REDUCING THE PLATINUM THEREIN TO THE FORM OF THE FREE METAL.
References Cited (Backward Citations)
US2394796A
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US2419272A
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US2478916A
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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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |