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Hiroyuki Kawahara
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Hiratsuka, JP
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last 30 patents
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Patent Grant
Epitaxial-wafer fabricating process
Patent number
6,217,650
Issue date
Apr 17, 2001
Komatsu Electronic Metals Co., Ltd.
Takeshi Hirose
C30 - CRYSTAL GROWTH
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Patent Grant
Process for preheat treatment of semiconductor wafers
Patent number
5,506,154
Issue date
Apr 9, 1996
Komatsu Electronic Metals Co., Ltd.
Hiroyuki Kawahara
H01 - BASIC ELECTRIC ELEMENTS