Membrane filtration assembly
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United States of America Patent
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May 25, 1999
Grant Date -
N/A
app pub date -
Sep 3, 1996
filing date -
Mar 2, 1994
priority date (Note) -
Expired
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Abstract
Membrane filtration assembly where the fluid to be filtered is recirculated on the retentate side of a membrane filter and where the filtered fluid, i.e. the permeate, is recirculated on the permeate side of the membrane filter in such a manner that the two streams are cocurrently passed along the membrane filter. The membrane filter comprises several membrane units in form of tubular supporting structures, each supporting structure comprising one or more filter membranes. The membrane units are mounted in parallel inside a common housing in such a manner that one stream flows inside the membrane units while the other stream flows in a space surrounding said membrane units. Each membrane unit is provided with a separate space designed as a narrow passageway on the inner side defined by the membrane unit and on the outer side defined by a channel tube, the inner cross section of which is 4 to 200% larger than the outer cross section of the membrane unit. The assembly is easy to clean, and it is easy to replace the individual membrane units.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- APV PASILAC A/S;INVENSYS APV A/S
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Andersen, So slashedren Mondrup | Silkeborg, DK | 1 | 65 |
Osterland, Niels | Sorring, DK | 2 | 68 |
Ottosen, Niels | Silkeborg, DK | 2 | 91 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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