Kyoritsu Yuki Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5070133 High water-absorptive resin emulsionExpiredJun 20, 90Dec 03, 91[C08J]
5045587 Method of maintaining flowability of acrylic polymer dispersionExpiredDec 12, 89Sep 03, 91[C08K]
5006590 Process for the preparation of dispersion of water-soluble cationic polymerExpiredSep 28, 89Apr 09, 91[C08F]
4929655 Process for production of water-soluble polymer dispersionExpiredDec 20, 88May 29, 90[C08F]
4632984 Process for the production of cationic starchExpiredJul 24, 85Dec 30, 86[C08B]
4370464 Cationic polymer flocculantExpiredOct 28, 81Jan 25, 83[C08G]
4261857 Method and apparatus for regenerating used active carbonExpiredSep 11, 78Apr 14, 81[C01B, F27B, B01J, F27D]

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