Membrane filtration device and process
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United States of America Patent
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Issued Date -
May 4, 2006
app pub date -
Sep 26, 2005
filing date -
Nov 23, 1998
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An element for use in ultrafiltration or microfiltration of potable water has a large number of small diameter hollow fibre membranes attached between two headers. Side plates attached to the sides of the headers define vertical flow channels containing the membranes. The elements may be placed side by side and stacked on top of each other to form cassettes having continuous vertical flow channels through the entire cassette. The membrane modules or cassettes may be arranged to cover a substantial part of the cross sectional area of an open tank. Tank water may flow upwards or downwards through the flow channels. A tank may be deconcentrated by at least partially emptying and refilling the tank with fresh water while permeation continues. Excess tank water created during deconcentration may flow generally upwards through the modules and out through a retentate outlet or overflow at the top of the tank.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
ZENON ENVIRONMENTAL INC | OAKVILLE ONTARIO L6M 4B2 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Adams, Nicholas William H | Hamilton, CA | 15 | 106 |
Cadera, Jason | Guelph, CA | 15 | 359 |
Cote, Pierre | Dundas, CA | 49 | 2101 |
Janson, Arnold | Burlington, CA | 28 | 1150 |
Pedersen, Steven | Burlington, CA | 22 | 907 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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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