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Integrated circuit package
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Patent number 5,721,453
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Issue date Feb 24, 1998
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NGK Spark Plug Co., Ltd.
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Ryuji Imai
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H01 - BASIC ELECTRIC ELEMENTS
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Multilayer ceramic wiring board
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Patent number 5,093,186
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Issue date Mar 3, 1992
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NGK Spark Plug Co., Ltd.
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Yukihiro Kimura
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Metal-ceramics composite materials
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Patent number 4,532,190
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Issue date Jul 30, 1985
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NGK Spark Plug Co., Ltd.
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Rokuro Kanbe
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES