US2552436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating lubricating oil with solid adsorbents
Assignee: Standard Oil Development Co
•
Filing: 1947-12-09
•
Granted: 1951-05-08
•
Expires: 1967-12-09
Abstract
No abstract record available.
Inventors
- 👤 George A Bennett
- 👤 Stephen F Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:56
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR TREATING LUBRICATING OILS WITH SILICA GEL IN A VERTICAL TREATING ZONE IN WHICH SILICA GEL IS INTRODUCED AT THE TOP OF SAID ZONE AND DROPS DOWNDARDLY THROUGH THE ZONE TO BE WITHDRAWN AT THE BOTTOM, LURICATING OIL IS INTRODUCED MIDWAY UP THE ZONE, FLOWS UPWARDLY THROUGH THE ZONE TO BE WITHDRAWN AT THE TOP THE RATIO OF LUBRICATING OIL TO SILICA GEL IN THE ZONE BEING IN THE RANGE OF ABOUT 0.2 TO 0.5 CCS. PER GRAM, FROM 1.0 TO 1.5 CCS. OF A LOW MOLECULAR WEIGHT PARAFFINIC HYDROCARBON LIQUID PER GRAM OF SILICA GEL IS INTRODUCED AT THE BOTTOM OF THE ZONE FLOWS UPWARDLY THROUGH THE ZONE AND IS PARTIALLY WITHDRAWN MIDWAY UP THE ZONE, THE REMAINDER BEING WITHDRAWN AT THE TOP OF THE
Claim 2
Dependent Claim
128 words
A PROCESS FOR TREATING LUBRICATING OILS WITH SILICA GEL IN A VERTICAL TREATING ZONE IN WHICH SILICA GEL IS INTRODUCED AT THE TOP OF SAID ZONE AND DROPS DOWNDARDLY THROUGH THE ZONE TO BE WITHDRAWN AT THE BOTTOM, LURICATING OIL IS INTRODUCED MIDWAY UP THE ZONE, FLOWS UPWARDLY THROUGH THE ZONE TO BE WITHDRAWN AT THE TOP THE RATIO OF LUBRICATING OIL TO SILICA GEL IN THE ZONE BEING IN THE RANGE OF ABOUT 0.2 TO 0.5 CCS. PER GRAM, FROM 1.0 TO 1.5 CCS. OF A LOW MOLECULAR WEIGHT PARAFFINIC HYDROCARBON LIQUID PER GRAM OF SILICA GEL IS INTRODUCED AT THE BOTTOM OF THE ZONE FLOWS UPWARDLY THROUGH THE ZONE AND IS PARTIALLY WITHDRAWN MIDWAY UP THE ZONE, THE REMAINDER BEING WITHDRAWN AT THE TOP OF THE
References Cited (Backward Citations)
US2384311A
Cited
US2415315A
Cited
US2395491A
Cited
US2398101A
Cited
US2449402A
Cited
US2441572A
Cited
US2464311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |