Patent US2776329A successfully refreshed from Google Patents.
US2776329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for liquid-liquid extraction
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-09-15
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Granted: 1957-01-01
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Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel J Mayeux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:39
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043; B01D11/0442
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR CONTACTING TWO IMMISCIBLE LIQUIDS OF DIFFERENT SPECIFIC GRAVITIES IN A UNITARY EXTRACTION ZONE HAVING A PLURALITY OF CERTICALY SPACED SEPARATION STAGES SEPARATED FROM EACH OTHER BY HOEIZONTAL, FINELY PERFORATED PARTITIONS, WHICH PROCESS COMPRISES INTRODUCTING A RELATIVELY HEAVY LIQUID INTO THE TOP PORTION OF SAID EXTRACTION ZONE, INTRODUCING A RELATIVELY LIGHT LIQUID INTO THE BOTTOM PORATION OF SAIC EXTRACTION ZONE, INTRODUCING AN INERT GAS INTO THE SEVERAL SEPARATION STAGES OF SAID EXTRACTION ZONE, TRAPPING SAID GAS IN THE FORM OF STAGNANT LAYERS BETWEEN
Claim 2
Dependent Claim
85 words
A PROCESS FOR CONTACTING TWO IMMISCIBLE LIQUIDS OF DIFFERENT SPECIFIC GRAVITIES IN A UNITARY EXTRACTION ZONE HAVING A PLURALITY OF CERTICALY SPACED SEPARATION STAGES SEPARATED FROM EACH OTHER BY HOEIZONTAL, FINELY PERFORATED PARTITIONS, WHICH PROCESS COMPRISES INTRODUCTING A RELATIVELY HEAVY LIQUID INTO THE TOP PORTION OF SAID EXTRACTION ZONE, INTRODUCING A RELATIVELY LIGHT LIQUID INTO THE BOTTOM PORATION OF SAIC EXTRACTION ZONE, INTRODUCING AN INERT GAS INTO THE SEVERAL SEPARATION STAGES OF SAID EXTRACTION ZONE, TRAPPING SAID GAS IN THE FORM OF STAGNANT LAYERS BETWEEN
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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |