Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2003-09-16
2008-09-02
Webb, Gregory (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C438S692000, C438S693000
Reexamination Certificate
active
07419946
ABSTRACT:
An apparatus for feeding slurry to an external device. The apparatus includes a preparation tank for preparing the slurry. A circulation pipe is connected to the preparation tank to circulate the slurry. A feeding pipe is connected between the preparation tank and the external device to feed the external device with the slurry. A pump sends the chemical solution in the preparation tank to the circulation pipe and the feeding pipe. A concentration detector is arranged downstream to the pump to detect the concentration of the slurry. A controller controls the concentration of the chemical solution in the preparation tank in accordance with the detection value of the concentration detector and controls the feeding of the chemical solution.
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Hiraoka Naoki
Osuda Hiroshi
Yamamoto Hotaka
Fujitsu Limited
Kratz Quintos & Hanson, LLP
Webb Gregory
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