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Method for production of wafer
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Patent number 5,447,890
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Issue date Sep 5, 1995
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Shin-Etsu Handotai Co., Ltd.
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Tadahiro Kato
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H01 - BASIC ELECTRIC ELEMENTS
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3905162
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Patent number 3,905,162
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Issue date Sep 16, 1975
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B28 - WORKING CEMENT, CLAY, OR STONE
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3878552
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Patent number 3,878,552
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Issue date Apr 15, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3821039
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Patent number 3,821,039
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Issue date Jun 28, 1974
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C30 - CRYSTAL GROWTH
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3009841
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Patent number 3,009,841
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Issue date Nov 21, 1961
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H01 - BASIC ELECTRIC ELEMENTS