US2745888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating of liquids with granular solids
Assignee: Sunoco Inc
•
Filing: 1952-01-21
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Granted: 1956-05-15
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Expires: 1972-01-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Mertes
- 👤 Harrison B Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:41
CPC Classifications
B; B01; B01D; B01D15/00; B01D15/02; C; C10; C10G; C10G25/00; C10G25/06; C10G25/08; B01D15/08; B01D15/10; B01D15/18; B01D15/1892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
PROCESS FOR COUNTERCURRENTLY CONTACTING A LIQUID WITH A GRANULAR SOLID WHICH COMPRISES: FEEDING A STREAM OF THE LIQUID INTO A VERTICAL ELONGATED OPEN COLUMN HAVING AN UPPER EXPANDED SECTION CONSTITUTING A RESERVOIR FOR GRANULAR SOLID AND A LOWER SECTION OF SMALLER DIAMETER CONSTITUTING A COUNTERCURRENT CONTACTING ZONE, THE LIQUID BEING FED INTO A LOWER PART OF SAID SECTION OF SMALLER DIAMETER, FLOWING LIQUID UPWARDLY THROUGH SAID SECTION OF SMALLER DIAMETER, MAINTAINING WITHIN SAID RESERVOIR A SUPPLY OF GRANULAR SOLID IN DENSE FORM IMMERSED IN LIQUID, PERMITTING SAID SOLID TO FALL DIRECTLY FROM SAID RESERVOIR INTO SAID SECIOTN SMALLER DIAMETER AND DOWNWARDLY
Claim 2
Dependent Claim
101 words
PROCESS FOR COUNTERCURRENTLY CONTACTING A LIQUID WITH A GRANULAR SOLID WHICH COMPRISES: FEEDING A STREAM OF THE LIQUID INTO A VERTICAL ELONGATED OPEN COLUMN HAVING AN UPPER EXPANDED SECTION CONSTITUTING A RESERVOIR FOR GRANULAR SOLID AND A LOWER SECTION OF SMALLER DIAMETER CONSTITUTING A COUNTERCURRENT CONTACTING ZONE, THE LIQUID BEING FED INTO A LOWER PART OF SAID SECTION OF SMALLER DIAMETER, FLOWING LIQUID UPWARDLY THROUGH SAID SECTION OF SMALLER DIAMETER, MAINTAINING WITHIN SAID RESERVOIR A SUPPLY OF GRANULAR SOLID IN DENSE FORM IMMERSED IN LIQUID, PERMITTING SAID SOLID TO FALL DIRECTLY FROM SAID RESERVOIR INTO SAID SECIOTN SMALLER DIAMETER AND DOWNWARDLY
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |