US3222410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dealkylation of unsaturated sulfur-containing alkylaromatic hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1962-02-15
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Granted: 1965-12-07
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Expires: 1982-02-15
Abstract
No abstract record available.
Inventors
- 👤 William M Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:33
CPC Classifications
C; C10; C10G; C10G47/00; C10G2400/00; C10G2400/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR THE CONVERSION OF AN ALKYLAROMATIC HYDROCARBON CHARGE STOCK CONTAINING MONO-OLEFINIC AND DI-OLEFINIC HYDROCARBONS WHICH COMPRISES REACTING SAID CHARGE STOCK WITH HYDROGEN IN A FIRST REACTION ZONE AT CONDITIONS SELECTED TO HYDROGENATE AT LEAST A PORTION OF SAID MONO-OLEFINIC AND DI-OLEFINIC HYDROCARBONS, AND INCLUDING A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 300*F. TO ABOUT 550*F.; REACTING AT LEAST A PORTION OF THE RESULTING HYDROGENATED EFFLUENT WITH HYDROGEN IN A SECOND REACTION ZONE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 1000*F. TO ABOUT 1500*F., AND SELECTED TO DEALKYLATE ALKYLAROMATIC HYDROCARBON IN SAID CHARGE STOCK.
Claim 2
Dependent Claim
98 words
A PROCESS FOR THE CONVERSION OF AN ALKYLAROMATIC HYDROCARBON CHARGE STOCK CONTAINING MONO-OLEFINIC AND DI-OLEFINIC HYDROCARBONS WHICH COMPRISES REACTING SAID CHARGE STOCK WITH HYDROGEN IN A FIRST REACTION ZONE AT CONDITIONS SELECTED TO HYDROGENATE AT LEAST A PORTION OF SAID MONO-OLEFINIC AND DI-OLEFINIC HYDROCARBONS, AND INCLUDING A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 300*F. TO ABOUT 550*F.; REACTING AT LEAST A PORTION OF THE RESULTING HYDROGENATED EFFLUENT WITH HYDROGEN IN A SECOND REACTION ZONE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 1000*F. TO ABOUT 1500*F., AND SELECTED TO DEALKYLATE ALKYLAROMATIC HYDROCARBON IN SAID CHARGE STOCK.
References Cited (Backward Citations)
US2577788A
Cited
US2774719A
Cited
US2883441A
Cited
US2958643A
Cited
US3001932A
Cited
US3116233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |