ITO, YASUHIRO

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5800708 Interfacial purifying apparatus using tourmalineExpiredMay 19, 97Sep 01, 98[B01D]
5770089 Water treatment method using tourmalineExpiredMay 02, 94Jun 23, 98[C02F]

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