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Virtual space management system
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Patent number 8,332,499
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Issue date Dec 11, 2012
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Sony Computer Entertainment Inc.
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Kazushi Yoshida
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Light gathering apparatus
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Patent number 5,805,337
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Issue date Sep 8, 1998
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Asahi Kogaku Kogyo Kabushiki Kaisha
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Kazushi Yoshida
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G02 - OPTICS
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Light gathering apparatus
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Patent number 5,724,183
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Issue date Mar 3, 1998
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Asahi Kogaku Kogyo Kabushiki Kaisha
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Kazushi Yoshida
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G02 - OPTICS
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Projector
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Patent number 5,651,598
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Issue date Jul 29, 1997
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Asahi Kogaku Kogyo Kabushiki Kaisha
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Kazushi Yoshida
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Projector
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Patent number 5,305,029
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Issue date Apr 19, 1994
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Asahi Kogaku Kogyo Kabushiki Kaisha
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Kazushi Yoshida
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Projector
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Patent number 5,302,983
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Issue date Apr 12, 1994
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Casio Computer Co., Ltd.
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Makoto Sato
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Magnifying projecting lens
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Patent number 5,278,698
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Issue date Jan 11, 1994
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Asahi Kogaku Kogyo Kabushiki Kaisha
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Takashi Iizuka
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G02 - OPTICS
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Image projecting device
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Patent number 5,274,406
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Issue date Dec 28, 1993
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Asahi Kogaku Kogyo Kabushiki Kaisha
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Yasuyuki Tejima
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G02 - OPTICS
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Projector
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Patent number 5,220,363
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Issue date Jun 15, 1993
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Casio Computer Co., Ltd.
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Makoto Sato
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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