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Process for producing micro Fresnel lens
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Patent number 4,737,447
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Issue date Apr 12, 1988
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Pioneer Electronic Corporation
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Shinichi Suzuki
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Pickup for optical disc
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Patent number 4,733,943
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Issue date Mar 29, 1988
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Pioneer Electronic Corporation
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Shinichi Suzuki
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G02 - OPTICS
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Magnetoelectric transducer
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Patent number 4,568,905
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Issue date Feb 4, 1986
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Pioneer Electronic Corporation
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Shinichi Suzuki
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H01 - BASIC ELECTRIC ELEMENTS