Patent US2985582A successfully refreshed from Google Patents.
US2985582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure hydrogenation of crude oils, tars or their residues
Assignee: BASF SE
•
Filing: 1958-03-18
•
Granted: 1961-05-23
•
Expires: 1978-03-18
Abstract
No abstract record available.
Inventors
- 👤 Oettinger Willi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:26
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/12; C10G45/00; C10G45/02; C10G45/04; C10G47/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A PROCESS FOR THE PRESSURE HYDROGENATION OF AN INITIAL MATERIAL SELECTED FORM THE CLASS CONSISTING OF CRUDE OILS, SHALE OILS, TARS AND THEIR RESIDUES AT TEMPERATURES BETWEEN 350*C. AND 550*C. WHEREIN SAID INITIAL MATERIAL IS PREHEATED IN A PRELIMINARY STAGE WHILE BEING CONTACTED WITH LARGE-SURFACED SUBSTANCES FOR REMOVAL OF ASH AND THEN INTRODUCED INTO A SUCCEEDING STAGE FOR SAID PRESSURE HYDROGENATION, THE IMPROVEMENT WHICH COMPRISES HEATING SAID INITIAL MATERIAL WHILE PASSING IT THROUGH SAID PRELIMINARY STAGE FROM AN INITIAL TEMPERATURE ABOVE 250*C. BUT BELOW 400*C. TO A TEMPERATURE OF AT LEAST 30*C. HIGHER THAN SAID INITIAL TEMPERATURE, SAID PRELIMINARY STAGE BEING FORMED BY AT LEAST ONE REACTION CHAMBER CONTAINING SAID LARGE-SURFACED SUBSTANCES AND HAVING A FREE SPACE OF AT LEAST 40% UP TO ABOUT 80%.
Claim 2
Dependent Claim
126 words
IN A PROCESS FOR THE PRESSURE HYDROGENATION OF AN INITIAL MATERIAL SELECTED FORM THE CLASS CONSISTING OF CRUDE OILS, SHALE OILS, TARS AND THEIR RESIDUES AT TEMPERATURES BETWEEN 350*C. AND 550*C. WHEREIN SAID INITIAL MATERIAL IS PREHEATED IN A PRELIMINARY STAGE WHILE BEING CONTACTED WITH LARGE-SURFACED SUBSTANCES FOR REMOVAL OF ASH AND THEN INTRODUCED INTO A SUCCEEDING STAGE FOR SAID PRESSURE HYDROGENATION, THE IMPROVEMENT WHICH COMPRISES HEATING SAID INITIAL MATERIAL WHILE PASSING IT THROUGH SAID PRELIMINARY STAGE FROM AN INITIAL TEMPERATURE ABOVE 250*C. BUT BELOW 400*C. TO A TEMPERATURE OF AT LEAST 30*C. HIGHER THAN SAID INITIAL TEMPERATURE, SAID PRELIMINARY STAGE BEING FORMED BY AT LEAST ONE REACTION CHAMBER CONTAINING SAID LARGE-SURFACED SUBSTANCES AND HAVING A FREE SPACE OF AT LEAST 40% UP TO ABOUT 80%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |