Patent US3691060A successfully refreshed from Google Patents.
US3691060A
Expired / Lapsed
US
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Hydrogenation of aromatic hydrocarbons
Assignee: TEXAS V INWOOD
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Filing: 1971-03-24
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Granted: 1972-09-12
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Expires: 1991-03-24
Abstract
Abstract AROMATIC HYDROCARBON FEEDSTOCKS CONTAINING ORGANIC SULFUR COMPOUNDS ARE HYDROGENATED IN A "SINGLE-STAGE" PROCESS, UTILIZING A DUAL-CATALYST HYDROGENATION SYSTEM. THE FEED IS FIRST HYDROFINED OVER A SULFACTIVE CATALYST SELECTIVE FOR THE HYDROECOMPOSITION OF ORGANIC SULFUR COMPOUNDS, AND TOTAL EFFLUENT IS THEN HYDROGENATED OVER A SULFUR-SENSITIVE GROUP VII NOBLE METAL HYDROGENATION CATALYST ACTIVE FOR THE HYDROGENATION OF AROMATIC HYDROCARBONS.
Inventors
- 👤 Texas V Inwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:30
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/40; H10W70/421; C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; C10G45/52; C10G65/00; C10G65/02; C10G65/04; C10G65/08; H10W40/00; H10W40/40; H10W40/43; H10W40/47; H10W90/00; H10W90/20; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
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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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |