US3563886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltene hydrodesulfurization with small catalyst particles in a parallel reactor system
Assignee: Chevron USA Inc
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Filing: 1968-10-25
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Granted: 1971-02-16
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Expires: 1988-10-25
Abstract
Abstract THE HYDRODESULFURIZATION OF A CRUDE OIL OR A REDUCED CRUDE CONTAINING THE ASPHALTENE FRACTION PROCEEDS AT UNEXEPECTEDLY LOW TEMPERATURES BY UTILIZING A GROUP VI AND GROUP VIII METAL CONTAINING CATALYST ON ALUMINA WHEN THE CATALYST PARTICLES ARE VERY SMALL AND HAVE A DIAMETER BETWEEN ABOUT 1/20 AND 1/40 INCH AND ARE DISPOSED IN A PARALLEL CATALYST BED SYSTEM.
Inventors
- 👤 Edgar Carlson
- 👤 Alfred M Henke
- 👤 William R Lehrian
- 👤 Joel D Mckinney
- 👤 Kirk J Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:57
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/14; C10G65/16; C10G2300/00; C10G2300/10; C10G2300/107
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |