Nippon Magnetic Dressing Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4917725 Process for treating electric furnace dustExpiredSep 19, 88Apr 17, 90[C22B]
4778523 Process for using steelmaking slagExpiredJun 24, 87Oct 18, 88[B22F]
4652310 Process for making a hardening agent for weak soil or sludge from steel making slagExpiredNov 20, 85Mar 24, 87[B22F]

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