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Accumulator for portable computers
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Patent number 5,039,928
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Issue date Aug 13, 1991
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Semiconductor Energy Laboratory Co., Ltd.
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Kazuo Nishi
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G06 - COMPUTING CALCULATING COUNTING
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Photoelectric conversion device
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Patent number 5,035,753
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Issue date Jul 30, 1991
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Semiconductor Energy Laboratory Co., Ltd.
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Kunio Suzuki
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor manufacturing device
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Patent number 4,986,213
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Issue date Jan 22, 1991
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Semiconductor Energy Laboratory Co., Ltd.
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Shunpei Yamazaki
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H01 - BASIC ELECTRIC ELEMENTS
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