Kabushiki Kaisha Kyoritsu Yuki Kogyo Kenkyusho

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4696740 Unit type waste water treating apparatusExpiredSep 19, 85Sep 29, 87[C02F, B01D]
4571256 Nitrogen fertilizer manifesting fungicidal property against pathogenic fungiExpiredMay 14, 85Feb 18, 86[E05B]
4192962 Method and apparatus for regenerating used activated carbonExpiredMay 19, 78Mar 11, 80[F27B, E27D]

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