US3817855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroprocessing of resids with metal adsorption on the second stage catalyst
Assignee: Mobil Oil AS
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Filing: 1971-10-12
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Granted: 1974-06-18
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Expires: 1991-10-12
Abstract
Abstract THIS INVENTION PROVIDES A METHOD FOR THE HYDROPROCESSING A HYDROCARBON CHARGED STOCK OVER A CATALYST CHARACTERIZED BY A STRONG HYDROGENATION ACTIVITY AT LOW TEMPERATURES FOLLOWED BY CONVERSION OF THE RESULTING PRODUCT AT HIGH TEMPERATURES IN THE PRESENCE OF A CATALYST OF LOW HYDROGENATION ACTIVITY. THE FIRST STAGE REACTION IS CONDUCTED AT A TEMPERATURE IN THE RANGE OF 600-785*F. AND EXCEEDS 800*F.
Inventors
- 👤 F Smith
- 👤 L Riekert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:36
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/04; 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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |