Patent US3732156A successfully refreshed from Google Patents.
US3732156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lubricating oils
Assignee: BP PLC
•
Filing: 1971-05-20
•
Granted: 1973-05-08
•
Expires: 1991-05-20
Abstract
Abstract LUBRICATING OIL OF IMPROVED V.I. AND ALSO GASOLINE ARE PRODUCED BY PARTIAL HYDROCRACKING OF A PETROLEUM FEEDSTOCK BOILING ABOVE 350*C. AT 300-400*C. AND 690026,700 KN./M.2G. USING A CATALYST OF A HYDROGENATING METAL AND A DECATIONISED FAUJASITE-TYPE ZEOLITE. LESS MIDDLE DISTILLATE IS PRODUCED THAN WHEN USING NON-ZEOLITE CATALYSTS. THE USE OF A DECATIONISED FAUJASITE IS NECESSARY, A MAGNESIUM FAUJASITE CATALYST GIVEN NO V.I. IMPROVEMENT THE HYDROGENATING METAL IS PREFERABLY A PLATINUM GROUP METAL AND THE PREFERRED CONVERSION IS 40-95% WT. OF PRODUCT BOILING BELOW 350*C. PRODUCTS, AFTER DEWAXING, OF 85-125 V.I. CAN BE PRODUCED FROM FEEDSTOCKS OF 6080 V.I.
Inventors
- 👤 R Bennett
- 👤 F Morum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:44
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G2400/00; C10G2400/02; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |