US3580837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrorefining of coke-forming hydrocarbon distillates
Assignee: Universal Oil Products Co
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Filing: 1969-04-07
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Granted: 1971-05-25
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Expires: 1989-04-07
Abstract
Abstract A PROCESS FOR HYDROREFINING SULFUROUS HYDROCARBON DISTILLATES CONTAINING MONO-OLEFINIC, DI-OLEFINIC AND AROMATIC HYDROCARBONS. THROUGH THE USE OF PAQRTICULAR CATALYTIC COMPOSITIES CONTAINING METALLIC COMPONENTS FROM GROUPS VII-B, HAVING AN ATOMIC NUMBER GREATER THAN 25, AND THE NOBLE METALS OF GROUP VIII, INCREASED SELECTIVITY AND STABILITY OF OPERATION IS ATTAINED. THE SELECTIVITY IS MOST NOTICEABLE WITH RESPECT TO THE RETENTION OF AROMATICS, AND IN HYDROGENATING CONJUGATED DI-OLEFINIC AND MONO-OLEFINIC HYDROCARBONS.
Inventors
- 👤 Ernest L Pollitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:29
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; C; C10; C10G; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |