Patent US2900238A successfully refreshed from Google Patents.
US2900238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus useful for liquid-liquid contacting
Assignee: Universal Oil Products Co
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Filing: 1956-12-24
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Granted: 1959-08-18
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Edwin K Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:07
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043; B01D3/00; B01D3/14; B01D3/16; B01D3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A CONTACTING COLUMN, THE COMBINATION OF A PAIR OF VERTICALLY SPACED, HORIZONTAL PLATES WITHIN THE COLUMN AND FORMING UPPER AND LOWER CONTACTING ZONES IN THE COLUMN, ONE OF SAID PLATES BEING PERFORATED AND THE OTHER BEING IMPERFORATE, AND THE PERFORATED PLATE BEING OF LAGER CROSS-SECTIONAL AREA THAN THE IMPERFORATE PLATE, FIRST CONDUIT MEANS IN A SIDE PORTION OF THE COLUMN EXTENDING IN A VERTICAL PLANE BEYOND THE IMPERFORATE PLATE AND CONNECTING SAID UPPER AND LOWER CONTACTING ZONES, SECOND VERTICAL CONDUIT MEANS IN SAID SIDE PORTION OF THE COLUMN BETWEEN THE EXTREMITY OF THE IMPERFORATED PLATE
Claim 2
Dependent Claim
96 words
IN A CONTACTING COLUMN, THE COMBINATION OF A PAIR OF VERTICALLY SPACED, HORIZONTAL PLATES WITHIN THE COLUMN AND FORMING UPPER AND LOWER CONTACTING ZONES IN THE COLUMN, ONE OF SAID PLATES BEING PERFORATED AND THE OTHER BEING IMPERFORATE, AND THE PERFORATED PLATE BEING OF LAGER CROSS-SECTIONAL AREA THAN THE IMPERFORATE PLATE, FIRST CONDUIT MEANS IN A SIDE PORTION OF THE COLUMN EXTENDING IN A VERTICAL PLANE BEYOND THE IMPERFORATE PLATE AND CONNECTING SAID UPPER AND LOWER CONTACTING ZONES, SECOND VERTICAL CONDUIT MEANS IN SAID SIDE PORTION OF THE COLUMN BETWEEN THE EXTREMITY OF THE IMPERFORATED PLATE
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |