Fishing – trapping – and vermin destroying
Patent
1995-02-23
1996-01-16
Hearn, Brian E.
Fishing, trapping, and vermin destroying
437250, 437946, 148DIG17, H01L 21302
Patent
active
054847486
ABSTRACT:
The single crystal silicon wafers which have undergone a treatment with a chemical liquid such as an acid or an alkali are stored without entailing contamination of their surfaces by causing the wafers to be immediately immersed, either directly or after being washed with water, in an aqueous hydrogen peroxide solution. The prevention of the contamination of surfaces of the wafers is attained effectively by setting the concentration of hydrogen peroxide in the aqueous hydrogen peroxide solution in the range of from 0.01 to 30% by weight and the temperature of the aqueous hydrogen peroxide solution at the time that the wafers are immersed in the solution in the range of from 10.degree. to 30.degree. C.
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Suzuki Kuniyoshi
Takaku Toshiaki
Hearn Brian E.
Radomsky Leon
Shin-Etsu Handotai & Co., Ltd.
Snider Ronald R.
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