Patent US3853683A successfully refreshed from Google Patents.
Patent US3054833A successfully refreshed from Google Patents.
US3054833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of aromatic hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1960-01-25
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Granted: 1962-09-18
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Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 George R Donaldson
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:42
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/58; C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/54; C07C2523/56; C07C2523/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR HYDROGENATING AROMATIC HYDROCARBONS CONTAINING SULFUROUS COMPOUNDS IN AN AMOUNT OF FROM ABOUT 0.1 P.P.M. TO ABOUT 3.0 P.P.M., CALCULATED AS ELEMENTAL SULFUR, WHICH COMPRISES CONTACTING SAID SULFURCONTAINING AROMATIC HYDROCARBONS WITH WATER-SATURATED HYDROGEN IN A PLURALITY OF REACTION ZONES HAVING DISPOSED THEREIN AN ALUMINA-PLATINUM CATALYTIC COMPOSITE CONTAINING FROM ABOUT 0.01% TO ABOUT 0.7% BY WEIGHT OF LITHIUM AND MAINTAINED UNDER AN IMPOSED PRESSURE WITHIN THE RANGE OF FROM ABOUT 100 TO ABOUT 2000 POUNDS PER SQUARE INCH, THE INLET TEMPERATURE TO EACH OF SAID REACTION ZONES BEING ABOUT 200*F. TO ABOUT 800*F., REMOVING A HYDROGENATED LIQUID PRODUCT FROM THE LAST REACTION ZONE IN SAID PLURALITY AND RECYCLING AT LEAST A PORTION OF SAID HYDROGENATED LIQUID PRODUCT TO THE FIRST REACTION ZONE IN SAID PLURALITY.
Claim 2
Dependent Claim
126 words
A PROCESS FOR HYDROGENATING AROMATIC HYDROCARBONS CONTAINING SULFUROUS COMPOUNDS IN AN AMOUNT OF FROM ABOUT 0.1 P.P.M. TO ABOUT 3.0 P.P.M., CALCULATED AS ELEMENTAL SULFUR, WHICH COMPRISES CONTACTING SAID SULFURCONTAINING AROMATIC HYDROCARBONS WITH WATER-SATURATED HYDROGEN IN A PLURALITY OF REACTION ZONES HAVING DISPOSED THEREIN AN ALUMINA-PLATINUM CATALYTIC COMPOSITE CONTAINING FROM ABOUT 0.01% TO ABOUT 0.7% BY WEIGHT OF LITHIUM AND MAINTAINED UNDER AN IMPOSED PRESSURE WITHIN THE RANGE OF FROM ABOUT 100 TO ABOUT 2000 POUNDS PER SQUARE INCH, THE INLET TEMPERATURE TO EACH OF SAID REACTION ZONES BEING ABOUT 200*F. TO ABOUT 800*F., REMOVING A HYDROGENATED LIQUID PRODUCT FROM THE LAST REACTION ZONE IN SAID PLURALITY AND RECYCLING AT LEAST A PORTION OF SAID HYDROGENATED LIQUID PRODUCT TO THE FIRST REACTION ZONE IN SAID PLURALITY.
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) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |