US4165274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of synthetic crude oil
Assignee: Shell USA Inc
•
Filing: 1978-06-13
•
Granted: 1979-08-21
•
Expires: 1998-06-13
Abstract
Abstract Process for treatment of tars and oil, the process being characterized by distillation of the oil to form a vacuum distillate and vacuum residue, hydrocracking of the distillate, deasphalting of the residue, and hydrodemetallizing and hydrodesulphurizing the deasphalted residue.
Inventors
- 👤 Pieter B. Kwant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:27
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/16; C10G65/00; C10G65/14; C10G67/02; C10G67/04; C10G67/0454; C10G67/0463
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
57 words
A process for treating tar sand oil comprising: (a) separating the tar sand oil by vacuum distillation into a vacuum distillate and a vacuum residue, (b) catalytically hydrocracking the vacuum distillate, (c) separating the vacuum residue by deasphalting into a deasphalted oil and asphalt, and (d) hydrometallizing the deasphalted oil and thereafter catalytically hydrodesulphurizing the deasphalted oil.
Claim 2
Dependent Claim
57 words
A process for treating tar sand oil comprising: (a) separating the tar sand oil by vacuum distillation into a vacuum distillate and a vacuum residue, (b) catalytically hydrocracking the vacuum distillate, (c) separating the vacuum residue by deasphalting into a deasphalted oil and asphalt, and (d) hydrometallizing the deasphalted oil and thereafter catalytically hydrodesulphurizing the deasphalted oil.
Claim 3
Dependent Claim
24 words
The process of claim 1 in which the hydrocracked vacuum distillate of step (b) and the hydrodesulphurized deasphalted oil of step (d) are blended.
References Cited (Backward Citations)
US4062758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |