US3598719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrotreating catalyst and process
Assignee: Chevron USA Inc
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Filing: 1969-08-05
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Granted: 1971-08-10
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Expires: 1989-08-05
Abstract
Abstract A CATALYST COMPRISING A CRYSTALLINE ZEOLITIC MOLECULAR SIEVE COMPONENT SUBSTANTIALLY FREE OF ANY CATALYTIC METAL OR METALS, AN ALUMINA-CONTAINING GEL COMPONENT, A GROUP VI HYDROGENATING COMPONENT AND GROUP VIII HYDROGENATING COMPONENET, AND PROCESSES USING SAID CATALYST.
Inventors
- 👤 Robert J White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:30
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/10; B01J29/14; B01J29/146; B01J29/061; B01J2229/00; B01J2229/30; B01J2229/42
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |