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Air purifier
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Patent number 11,786,628
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Issue date Oct 17, 2023
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Sunstar Engineering Inc.
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Tomoharu Usa
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Backlight unit and display device
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Patent number 10,353,140
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Issue date Jul 16, 2019
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SHARP KABUSHIKI KAISHA
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Katsuhiro Yamaguchi
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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In-vehicle sound control system
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Patent number 8,121,307
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Issue date Feb 21, 2012
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Panasonic Corporation
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Katsuhiro Yamaguchi
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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In-vehicle communication system
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Patent number 8,031,877
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Issue date Oct 4, 2011
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Panasonic Corporation
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Katsuhiro Yamaguchi
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G10 - MUSICAL INSTRUMENTS ACOUSTICS