US Patent No: 6,197,203

Number of patents in Portfolio can not be more than 2000

Filtration method and filtration apparatus

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Importance

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Abstract

Filtration apparatus prevents a membrane filter from fouling by providing a UV irradiation apparatus. The filtration apparatus comprises a filtration tank which contains a membrane filter with a pore size of 0.1 to 1 .mu.m connected to the UV irradiation equipment, an air diffusing pipe placed below the membrane filter, an air blower for sending air to the air diffusing pipe, a filtrate discharge pipe connected to the membrane filter, a flow meter and a flow control valve.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CHIYODA KOHAN CO., LTD.TOKYO1

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inaba, Toshiaki Tokyo, JP 4 30
Ishida, Hiroshi Anjo, JP 160 1447
Uragami, Itsuo Tokyo, JP 1 5

Cited Art

Patent Info (Count) # Cites Year
 
AMERICAN SAFEWATER TECHNOLOGY, INC. (1)
5,389,254 Water treatment system 10 1993
 
EBARA CORPORATION (1)
5,614,088 Cleaning water production system 12 1996
 
KUBOTA CORPORATION (1)
5,451,317 Solid-liquid separator 48 1994
 
MITSUI CHEMICALS, INC. (1)
5,651,889 Sludge treatment membrane apparatus 12 1996

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
ECOLAB INC. (3)
7,392,811 Delivery head for multiple phase treatment composition, vessel including a delivery head, and method for treating a vessel interior surface 0 2004
7,247,210 Methods for treating CIP equipment and equipment for treating CIP equipment 1 2004
7,220,358 Methods for treating membranes and separation facilities and membrane treatment composition 3 2004
 
CLEAR CREEK SYSTEMS, INC. (2)
7,160,441 Urban runoff water treatment methods and systems 1 2002
7,344,640 Urban runoff water treatment methods and systems 1 2005