US3558475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrotreating catalyst and process
Assignee: Chevron USA Inc
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Filing: 1969-12-08
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Granted: 1971-01-26
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Expires: 1989-12-08
Abstract
Abstract A CATALYST COMPRISING A CRYSTALLINE ZEOLITIC MOLECULAR SIEVE COMPONENT SUBSTANTIALLY FREE OF ANY CATALYTIC METAL OR METALS, A SILICA-CONTAINING GEL COMPONENT, A GROUP VI HYDROGENATING COMPONENT AND A GROUP VIII HYDROGENATING COMPONENT, AND PROCESSES USING SAID CATALYST.
Inventors
- 👤 Joseph Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:15
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/02; C10G49/08; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/16; 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) | 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 |