US2614911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Countercurrent extraction process and apparatus
Assignee: Individual
•
Filing: 1947-05-07
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Granted: 1952-10-21
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Expires: 1967-05-07
Abstract
No abstract record available.
Inventors
- 👤 Bonotto Michele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:27
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D11/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A PROCESS FOR THE EXTRACTION OF BUOYANT SOLID MATERIAL IN WHICH A SOLID PROCESS MATERIAL HAVING A LOWER SPECIFIC GRAVITY THAN THE SOLVENT UTILIZED IS CONTINUOUSLY PASSED THROUGH AN EXTRACTION UNIT, A SOLVENT HAVING A HIGHER SPECIFIC GRAVITY THAN THE PROCESS MATERIAL IS FED AND CONTINUOUSLY PASSED IN COUNTER-CURRENT, TO THE MOVEMENT OF SAID SOLID MATERIAL, AND LIQUID MISCELLA IS PRODUCED, WHICH CONSISTS IN CONDUCTING SAID MISCELLA TO MOVE CONTINUOUSLY IN COUNTER-CURRENT WITH THE MOVEMENT OF SAID BUOYANT SOLID MATERIAL TOWARD AND TO THE MISCELLA OUTLET, FORMING DURING SUCH CONDUCTION A POOL OF SAID LIQUID MISCELLA, DISCHARGING SAID MISCELLA THROUGH SAID POOL, CONVEYING THE SOLID MATERIAL ACROSS SAID POOL OF SAID MISCELLA TO CAUSE A FLOATING OUT OF FINES FROM SAID MISCELLA AND THEN CONVEYING SAID SOLID MATERIAL LOADED WITH FINES FROM THE MISCELLA TO SAID EXTRACTION UNIT.
Claim 2
Dependent Claim
138 words
A PROCESS FOR THE EXTRACTION OF BUOYANT SOLID MATERIAL IN WHICH A SOLID PROCESS MATERIAL HAVING A LOWER SPECIFIC GRAVITY THAN THE SOLVENT UTILIZED IS CONTINUOUSLY PASSED THROUGH AN EXTRACTION UNIT, A SOLVENT HAVING A HIGHER SPECIFIC GRAVITY THAN THE PROCESS MATERIAL IS FED AND CONTINUOUSLY PASSED IN COUNTER-CURRENT, TO THE MOVEMENT OF SAID SOLID MATERIAL, AND LIQUID MISCELLA IS PRODUCED, WHICH CONSISTS IN CONDUCTING SAID MISCELLA TO MOVE CONTINUOUSLY IN COUNTER-CURRENT WITH THE MOVEMENT OF SAID BUOYANT SOLID MATERIAL TOWARD AND TO THE MISCELLA OUTLET, FORMING DURING SUCH CONDUCTION A POOL OF SAID LIQUID MISCELLA, DISCHARGING SAID MISCELLA THROUGH SAID POOL, CONVEYING THE SOLID MATERIAL ACROSS SAID POOL OF SAID MISCELLA TO CAUSE A FLOATING OUT OF FINES FROM SAID MISCELLA AND THEN CONVEYING SAID SOLID MATERIAL LOADED WITH FINES FROM THE MISCELLA TO SAID EXTRACTION UNIT.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |