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Ho-Jun Kang

Han S Uhm

Yong Cheol Hong

The surface cleaning of various components of high-tech devices, including computers and/or semiconductors, is performed during manufacturing. This surface cleaning is performed within a reduced pressure chamber by making use of perifluorocompound industrial gases, which eventually contaminate the atmosphere. These contaminant gases are emitted with nitrogen gas, which is used in operation of a dry pump. Under certain conditions, microwave radiation generates an atmospheric plasma torch. This plasma-torch device is attached to the vacuum pump, which emits the nitrogen gas with contaminants. The oxidation mechanism in the torch flames eliminates these contaminants. Additional reaction gases are mixed with the waste gas to improve efficiency of the contaminant elimination.

Growing community of inventors

Seoul, South Korea

Ho-Jun Kang