Inventor
NAGAI RYO
JP41 patents
⚠️ This page may combine multiple inventors who share the name “NAGAI RYO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI MAXELL
13 patentsUS6051333AApr 18, 2000
Cell comprising spirally wound electrodes
HITACHI MAXELL22 citations91
US5912090AJun 15, 1999
Nickel-hydrogen stacked battery pack
HITACHI MAXELL31 citations89
US5227043AJul 13, 1993
Ionic conductive polymer electrolyte and cell comprising the same
HITACHI MAXELL34 citations89
US5140252AAug 18, 1992
Method of charging secondary batteries
HITACHI MAXELL24 citations89
US5202202AApr 13, 1993
Cell comprising polyaniline positive electrode and method for producing polyaniline powder therefor
HITACHI MAXELL13 citations74
US4996089AFeb 26, 1991
Optical data recording medium
HITACHI MAXELL12 citations71
US6709787B2Mar 23, 2004
Polycarbon sulfide, process for preparing the same and nonaqueous electrolyte battery comprising the same
HITACHI MAXELL9 citations68
US4808499AFeb 28, 1989
Lithium secondary battery
HITACHI MAXELL10 citations68
US6593031B1Jul 15, 2003
Nickel metal-hydride cell
HITACHI MAXELL6 citations62
US6562520B1May 13, 2003
Polymer electrolyte and rechargeable cell comprising the same
HITACHI MAXELL5 citations62
US4411971AOct 25, 1983
Lithium compounds
HITACHI MAXELL2 citations61
US6905794B2Jun 14, 2005
Air-hydrogen battery
HITACHI MAXELL5 citations58
US7998637B2Aug 16, 2011
Liquid fuel cell with a planer electrolyte layer
HITACHI MAXELL0 citations37
HITACHI LTD
12 patentsUS5359221AOct 25, 1994
Semiconductor device
HITACHI LTD107 citations96
US6809364B2Oct 26, 2004
Semiconductor integrated circuit device and a method of manufacture thereof
HITACHI LTD24 citations93
US6621110B1Sep 16, 2003
Semiconductor intergrated circuit device and a method of manufacture thereof
HITACHI LTD34 citations93
US6538945B2Mar 25, 2003
Sense amplifiers having reduced Vth deviation
HITACHI LTD17 citations84
US6287912B1Sep 11, 2001
Method of fabricating semiconductor device
HITACHI LTD18 citations84
US6399453B2Jun 4, 2002
Process of manufacturing semiconductor integrated circuit device having an amorphous silicon gate
HITACHI LTD13 citations74
US4707718ANov 17, 1987
Read-only memory
HITACHI LTD13 citations74
US6828242B2Dec 7, 2004
Method for manufacturing semiconductor integrated circuit device
HITACHI LTD6 citations73
US4367269AJan 4, 1983
Solid electrolyte
HITACHI LTD8 citations73
US6198128B1Mar 6, 2001
Method of manufacturing a semiconductor device, and semiconductor device
HITACHI LTD13 citations71
US7057243B2Jun 6, 2006
Hybrid semiconductor device having an n+ (p) doped n-type gate and method of producing the same
HITACHI LTD2 citations63
US6812540B2Nov 2, 2004
Semiconductor integrated circuit device
HITACHI LTD6 citations63
ELPIDA MEMORY INC
6 patentsUS7224034B2May 29, 2007
Method for manufacturing semiconductor integrated circuit device
ELPIDA MEMORY INC2 citations62
US7414291B2Aug 19, 2008
Semiconductor device and method of manufacturing the same
ELPIDA MEMORY INC3 citations60
US7875518B2Jan 25, 2011
Semiconductor device having silicon layer in a gate electrode
ELPIDA MEMORY INC0 citations52
US7687849B2Mar 30, 2010
Method for manufacturing semiconductor integrated circuit device
ELPIDA MEMORY INC0 citations52
US7598549B2Oct 6, 2009
Semiconductor device having a silicon layer in a gate electrode
ELPIDA MEMORY INC0 citations52
US7417291B2Aug 26, 2008
Method for manufacturing semiconductor integrated circuit device
ELPIDA MEMORY INC0 citations52
FUJIFILM BUSINESS INNOVATION CORP
3 patentsUS12535752B2Jan 27, 2026
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12461467B2Nov 4, 2025
Carrier for electrostatic image development, electrostatic image developer, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US12529974B2Jan 20, 2026
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations50