Selective clogging of failed fibers
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United States of America Patent
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Nov 19, 1996
Grant Date -
N/A
app pub date -
May 24, 1994
filing date -
Jun 1, 1993
priority date (Note) -
Expired
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Abstract
A method of selective clogging of failed hollow fibers of a membrane module, including a pack or bundle of fibers in a shell-side and bore-side arrangement which includes failed fibers and non-failed fibers, comprises the steps of: clogging bores of all of the fiber at one end of the pack or bundle of the fibers; substantially evacuating the membrane module both at the shell-side and at the bore-side; filling the bore-side and the shell-side with a non-permeant gas; subsequently-holding the membrane module vertically, disconnecting the bore-side of the membrane module from a supply of the non-permeant gas and dipping another end of the membrane module opposite to the clogged end into a reservoir containing a liquid sealant; applying a reduced pressure to the shell-side for a period of time sufficient to permit suction of sealant into the bores of the failed fibers through a failure of which vacuum is applied to the bore-side; allowing the sealant to solidify at least partially to clog the bores of both the failed fibers and the non-failed fibers; and cutting off a length of the bundle of the fibers such that the bores of the non-failed fibers are exposed while the bores of the failed fibers remain clogged.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- AGA AB;ROTEM INDUSTRIES LTD.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Azariah, Moshe | Moshav Gilat, IL | 2 | 66 |
Cohen, Haim | Beer-Sheva, IL | 39 | 247 |
Golub, Dan | Omer, IL | 2 | 66 |
Saguee, Shlomo | Beer-Sheva, IL | 3 | 75 |
Soffer, Abraham | Arad, IL | 8 | 162 |
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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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