US3700585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dewaxing of oils by shape selective cracking and hydrocracking over zeolites zsm-5 and zsm-8
Assignee: Mobil Oil AS
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Filing: 1969-10-10
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Granted: 1972-10-24
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Expires: 1989-10-10
Abstract
Abstract STRAIGHT-CHAIN HYDROCARBONS AND SLIGHTLY BRANCHEDCHAIN HYDROCARBONS ARE SELECTIVELY CONVERTED UTILIZING NOVEL CRYSTALLINE ZEOLITES HAVING UNIQUE MOLECULAR SIEVING PROPERTIES. THE CATALYST PREFERABLY CONTAINS ACIDIC CATIONS AND CAN ALSO CONTAINS A COMPONENT HAVING A HYDROGENATION/DEHYDROGENATION FUNCTION. THE PROCESS OF THIS INVENTION IS PARTICULARLY USEFUL FOR THE DEWAXING OF HYDROCARBON OILS INCLUDING REMOVAL OF HIGH FREEZING POINT PARAFFINS FROM JET FUEL TO LOWER FREEZING, AS WELL AS IMPROVING THE OCTANE RATING OF NAPHTHA FRACTIONS..
Inventors
- 👤 Nai Yuen Chen
- 👤 Stanley J Lucki
- 👤 William E Garwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:30
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/405; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2876; Y; Y10; Y10S; Y10S208/00; Y10S208/02
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |