Patent US2403272A successfully refreshed from Google Patents.
US2857442A
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Aromatization process and catalyst therefor
Assignee: Gulf Research and Development Co
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Filing: 1954-11-12
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Granted: 1958-10-21
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Expires: 1974-11-12
Abstract
No abstract record available.
Inventors
- 👤 Russell G Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:14
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C; C07; C07C; C07C15/00; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR THE PREPARATION OF A CATALYST FOR THE DEHYDROGENATION OF HYDROCARBONS COMPRISING IMPREGNATING AN ADSORBENT ALUMINA SUPPORT WITH A SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMATES AND DICHROMATES OF SODIUM AND POTASSIUM IN AMOUNTS TO FORM A CATALYST CONTAINING 1 TO 20% CHROMIUM, SAID SOLUTION CONTAINING 0.1 TO 15% OF THE HYDROXIDE OF THE ALKALI METAL IN THE CHROMIUM-CONTAINING COMPOUND USED IN THE IMPREGNATION TO GIVE THE IMPREGNATING SOLUTION A PH OF ABOUT 10, AND DRYING THE THUS IMPREGNATED SUPPORT.
Claim 2
Dependent Claim
86 words
A PROCESS FOR THE PREPARATION OF A CATALYST FOR THE DEHYDROGENATION OF HYDROCARBONS COMPRISING IMPREGNATING AN ADSORBENT ALUMINA SUPPORT WITH A SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMATES AND DICHROMATES OF SODIUM AND POTASSIUM IN AMOUNTS TO FORM A CATALYST CONTAINING 1 TO 20% CHROMIUM, SAID SOLUTION CONTAINING 0.1 TO 15% OF THE HYDROXIDE OF THE ALKALI METAL IN THE CHROMIUM-CONTAINING COMPOUND USED IN THE IMPREGNATION TO GIVE THE IMPREGNATING SOLUTION A PH OF ABOUT 10, AND DRYING THE THUS IMPREGNATED SUPPORT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |