Furukawa Denchi Kabushiki Kaisha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 7147

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6048372 Method of producing an electrode plate used for a lithium secondary battery and a lithium secondary batterySep 23, 98Apr 11, 00[H01M]
5716734 Pocket type separator for electrode plate of storage batteryOct 28, 92Feb 10, 98[H01M]
5714280 Lithium secondary batteryOct 31, 95Feb 03, 98[H01M]
5470676 Lead-acid storage battery containing pocket-type electrode assemblyNov 16, 94Nov 28, 95[H01M]
5464654 Hydrogen-occlusion electrode and a method of manufacturing the electrodeJul 14, 94Nov 07, 95[H01M]
5395712 Paste-type nickel electrode for an alkaline storage battery and an alkaline storage battery containing the electrodeJul 22, 93Mar 07, 95[H01M]
5360687 Hydrogen-occulusion electrodeJun 10, 93Nov 01, 94[H01M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6215311 Battery cell inspecting method and apparatusExpiredDec 15, 98Apr 10, 01[H02J, G01N]
5902545 Hydrogen occlusion alloys for electrical cellsExpiredJun 23, 97May 11, 99[C22C]
5891588 Lithium secondary batteryExpiredMay 08, 97Apr 06, 99[H01M]
5876874 Nickel electrode for secondary batteryExpiredMay 27, 97Mar 02, 99[H01M]
5865982 Process for preparing compoundExpiredJun 16, 97Feb 02, 99[C25B]
5853918 Lithium secondary battery containing graphitized carbon active materialExpiredAug 23, 96Dec 29, 98[H01M]
5846674 Electrode for rechargeable battery with nonaqueous electrolyte and process for producing the sameExpiredJun 20, 97Dec 08, 98[H01M]
5840442 Method for activating an alkaline rechargeable batteryExpiredDec 12, 96Nov 24, 98[H01M]
5804945 DC power supply system with automatic recharging for storage batteryExpiredNov 10, 97Sep 08, 98[H02J]
5775602 Manufacturing method for a hydrogen-storage-alloy powder for batteriesExpiredSep 09, 96Jul 07, 98[B02C]
5688294 Method for manufacturing a cylindrical nickel-hydrogen rechargeable batteryExpiredNov 04, 96Nov 18, 97[H01M]
5665483 Sealed storage batteryExpiredMay 16, 96Sep 09, 97[H01M]
5635313 Nickel electrode for an alkaline secondary batteryExpiredOct 19, 95Jun 03, 97[H01M]
5586993 Sealed storage battery and manufacturing method thereofExpiredJun 01, 95Dec 24, 96[H01M]
5549992 Preparing method for a nickel hydroxide for a nickel electrode, a manufacturing method for the nickel electrode, and an alkaline secondary battery incorporating the nickel electrode thereinExpiredOct 11, 94Aug 27, 96[H01M]
5542958 Method for manufacturing a hydrogen absorbing alloy electrodeExpiredSep 28, 94Aug 06, 96[H01M]
5514497 Paste nickel electrode plate and a storage battery including an electroconductive materialExpiredMay 19, 95May 07, 96[H01M]
5508121 Nickel hydroxide electrode for use in an alkaline secondary batteryExpiredFeb 25, 94Apr 16, 96[H01M]
5496665 Hydrogen-occlusion-alloy electrodeExpiredAug 22, 94Mar 05, 96[H01M]
5466544 Method for manufacturing a hydrogen-occlusion-alloy electrodeExpiredMar 25, 94Nov 14, 95[H01M]

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