Meidensha Electric Mfg. Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4550065 Electrolyte circulation type metal-halogen secondary batteryExpiredApr 12, 82Oct 29, 85[H01M]
4520080 Electrolytes circulation type cell stack secondary batteryExpiredMay 03, 82May 28, 85[H01M]
4511305 ManipulatorExpiredJan 13, 83Apr 16, 85[B66C]
4431562 Hydrogen-containing silicic substance, process for producing the same and use thereofExpiredMay 12, 82Feb 14, 84[C01B, B01J]
4418128 Metal-bromine secondary batteryExpiredMar 25, 82Nov 29, 83[H01M]
4416953 Secondary batteryExpiredMar 25, 82Nov 22, 83[H01M]
4321312 Metal-halogen secondary battery systemExpiredNov 10, 80Mar 23, 82[H01M]

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