Patent US2590872A successfully refreshed from Google Patents.
US2590872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for clay treating oil
Assignee: Lummus Technology LLC
•
Filing: 1949-08-25
•
Granted: 1952-04-01
•
Expires: 1969-08-25
Abstract
No abstract record available.
Inventors
- 👤 Wheaton W Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:27
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE METHOD OF CONTACTING A LUBRICATING OIL WITH A DECOLORIZING AND STABILIZING CLAY ADSORBENT TO IMPROVE THE QUALITY OF THE OIL WHICH COMPRISES PASSING THE ADSORBENT AND OIL TO A CLOSED VESSEL, EXTERNALLY TRANSFERRING MIXED ADSORBENT AND OIL FROM A LOWER PART OF SAID VESSEL THROUGH AND ATTENUATED PATH TO A POINT ABOVE THE LEVEL OF THE MIXTURE IN SAID VESSEL, INJECTING AN INERT HEATED GAS INTO SAID EXTERNAL TRANSFER PATH TO SIMULTANEOUSLY INDUCE CIRCULATION THERETHROUGH BY REDUCTION OF THE BULK DENSITY THEREIN, SIMULTANEOUSLY SCRUBBING SAID MIXTURE IN SAID ATTENUATED PATH THEREBY RELEASING VOLATILE MATTER CARRIED BY THE ADSORBENT-OIL MIXTURE, REMOVING RELEASED VOLATILE MATTER-FROM AN UPPER PART OF SAID VESSEL, AND REMOVING CLAY AND TREATED OIL FROM A LOWER PART OF SAID VESSEL.
Claim 2
Independent Claim
123 words
THE METHOD OF CONTACTING A LUBRICATING OIL WITH A DECOLORIZING AND STABILIZING CLAY ADSORBENT TO IMPROVE THE QUALITY OF THE OIL WHICH COMPRISES PASSING THE ADSORBENT AND OIL TO A CLOSED VESSEL, EXTERNALLY TRANSFERRING MIXED ADSORBENT AND OIL FROM A LOWER PART OF SAID VESSEL THROUGH AND ATTENUATED PATH TO A POINT ABOVE THE LEVEL OF THE MIXTURE IN SAID VESSEL, INJECTING AN INERT HEATED GAS INTO SAID EXTERNAL TRANSFER PATH TO SIMULTANEOUSLY INDUCE CIRCULATION THERETHROUGH BY REDUCTION OF THE BULK DENSITY THEREIN, SIMULTANEOUSLY SCRUBBING SAID MIXTURE IN SAID ATTENUATED PATH THEREBY RELEASING VOLATILE MATTER CARRIED BY THE ADSORBENT-OIL MIXTURE, REMOVING RELEASED VOLATILE MATTER-FROM AN UPPER PART OF SAID VESSEL, AND REMOVING CLAY AND TREATED OIL FROM A LOWER PART OF SAID VESSEL.
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) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |