US2831754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent extraction process
Assignee: Jones and Laughlin Steel Corp
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Filing: 1954-05-10
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Granted: 1958-04-22
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Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Dan P Manka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:28
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0446; B01D11/0473
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE PROCESS OF EXTRACTING MATERIAL DISSOLVED IN A FIRST LIQUID BY MEANS OF A SECOND LIQUID WHICH IS A SOVENT FOR SAID MATERIAL, THE LIQUIDS BEING SUBSTANTIALLY INSOLUBLE IN EACH OTHER, COMPRISING COUNTER-ROTATINGLY COMMINGLING SAID LIQUIDS UNDER PRESSURE INTO A JET, WHEREBY SAID LIQUIDS ARE INTIMATELY MIXED AND EQUILIBRIUM IS ATTAINED BETWEEN SAID FIRST LIQUID AND UNEXTRACTED MATERIAL AND BETWEEN SAID SECOND LIQUID AND EXTRACTED MATERIAL, COLLECTING SAID COMMINGLED LIQUIDS AND SEPARATING ONE FROM THE OTHER.
Claim 2
Dependent Claim
76 words
THE PROCESS OF EXTRACTING MATERIAL DISSOLVED IN A FIRST LIQUID BY MEANS OF A SECOND LIQUID WHICH IS A SOVENT FOR SAID MATERIAL, THE LIQUIDS BEING SUBSTANTIALLY INSOLUBLE IN EACH OTHER, COMPRISING COUNTER-ROTATINGLY COMMINGLING SAID LIQUIDS UNDER PRESSURE INTO A JET, WHEREBY SAID LIQUIDS ARE INTIMATELY MIXED AND EQUILIBRIUM IS ATTAINED BETWEEN SAID FIRST LIQUID AND UNEXTRACTED MATERIAL AND BETWEEN SAID SECOND LIQUID AND EXTRACTED MATERIAL, COLLECTING SAID COMMINGLED LIQUIDS AND SEPARATING ONE FROM THE OTHER.
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |