US3654130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of high v.i. lube oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-11-10
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Granted: 1972-04-04
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Expires: 1989-11-10
Abstract
Abstract HIGH BOILING HYDROCARBON FEEDS ARE CONVERTED TO HIGH V.I. LUBE OILS IN HIGH YIELDS BY HYDROTREATING IN A FIRST STAGE OVER A HYDROGENATION CATALYST UNDER CONDITIONS ADAPTED TO SATURATE THE POLYNUCLEAR AROMATIC HYDROCARBONS THEREIN AND THEN HYDROCRACKING IN A SECOND STAGE OVER A FAUJASITEBASE CATALYST, SUCH AS PD ON H-FAUJASITE, UNDER CONDITIONS SUCH THAT LESS THAN 15% CONVERSION TO PRODUCTS BOILING BELOW 650*F. OCCURS AND POLYNUCLEAR NAPHTHENES ARE CONVERTED TO SINGLE RING NAPHTHENES, AND PARAFFINS ARE ISOMERIZED TO BRANCH-CHAIN STRUCTURE.
Inventors
- 👤 Alexis Voorhies Jr
- 👤 Glen P Hamner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:49
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64; C10G2400/00; C10G2400/10; Y; Y10; Y10S; Y10S208/00; Y10S208/02
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |