US3558471A
Expired / Lapsed
US
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Hydrotreating catalyst comprising an ultrastable crystalline zeolitic molecular sieve component,and methods for making and using said catalyst
Assignee: Chevron USA Inc
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Filing: 1968-09-13
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Granted: 1971-01-26
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Expires: 1988-09-13
Abstract
Abstract A CATALYST COMPRISING AN ULTRA-STABLE CRYSTALLINE ZEOLITE MOLECULAR SIEVE COMPONENT SUBSTANTIALLY FREE OF ANY CATALYTIC METAL OR METALS, A SILICA-CONTAINING GEL COMPONENT, A GROUP VI HYDDROGENATING COMPONENT, AND A GROUP VIII HYDROGENATING COMPONENT, AND METHODS FOR MAKING AND USING SAID CATALYST. D R A W I N G
Inventors
- 👤 James R Kittrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:18
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/16; C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G47/20; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |