Babcock-Hitachi, Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4539088 Electrodialysis desalination process system for seawaterExpiredFeb 13, 84Sep 03, 85[B01D]
4539091 Electrodialysis desalination process and system for seawaterExpiredOct 03, 83Sep 03, 85[B01D]
4464183 Heat recovery process in coal gasificationExpiredMay 09, 83Aug 07, 84[C10J]
4461629 Heat recovery process in coal gasificationExpiredSep 29, 82Jul 24, 84[C10J]
4403941 Combustion process for reducing nitrogen oxidesExpiredAug 05, 80Sep 13, 83[F23N]
4370262 Catalytic structure for treating exhaust gases and a process for making the catalytic structureExpiredJun 17, 80Jan 25, 83[B01J]
4328195 Process for desulfurizing combustion exhaust gasesExpiredMar 14, 80May 04, 82[C01B]

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