Inventor · disambiguated record
Ryo Nagai
Also filed as: NAGAI RYO
39 granted patents·14 pending applications·493 citations·filing 1980–2024
98Inventor score
Files withHITACHI LTD14HITACHI MAXELL13ELPIDA MEMORY INC7FUJIFILM BUSINESS INNOVATION CORP6GLOBERIDE INC2
Top patents by PatentIndex Score
53 records- 0187US5359221ASemiconductor deviceHITACHI LTD·Filed 1993·Granted Oct 25, 1994·107 cites·25 claims
- 0285US6621110B1Semiconductor intergrated circuit device and a method of manufacture thereofHITACHI LTD·Filed 2000·Granted Sep 16, 2003·34 cites·5 claims
- 0381US6809364B2Semiconductor integrated circuit device and a method of manufacture thereofHITACHI LTD·Filed 2003·Granted Oct 26, 2004·24 cites·6 claims
- 0472US6538945B2Sense amplifiers having reduced Vth deviationHITACHI LTD·Filed 2002·Granted Mar 25, 2003·17 cites·20 claims
- 0571US6342697B1Method and apparatus for detecting origin of measurementMITUTOYO CORP·Filed 1999·Granted Jan 29, 2002·35 cites·7 claims
- 0670US5227043AIonic conductive polymer electrolyte and cell comprising the sameHITACHI MAXELL·Filed 1990·Granted Jul 13, 1993·34 cites·36 claims
- 0769US6900492B2Integrated circuit device with P-type gate memory cell having pedestal contact plug and peripheral circuitNEC ELECTRONICS CORP·Filed 2002·Granted May 31, 2005·12 cites·9 claims
- 0867US6399453B2Process of manufacturing semiconductor integrated circuit device having an amorphous silicon gateHITACHI LTD·Filed 2001·Granted Jun 4, 2002·13 cites·36 claims
- 0965US11873746B2VehicleSUBARU CORP·Filed 2023·Granted Jan 16, 2024·0 cites·4 claims
- 1065US7414291B2Semiconductor device and method of manufacturing the sameELPIDA MEMORY INC·Filed 2005·Granted Aug 19, 2008·3 cites·4 claims
- 1164US12461467B2Carrier for electrostatic image development, electrostatic image developer, process cartridge, image forming apparatus, and image forming methodFUJIFILM BUSINESS INNOVATION CORP·Filed 2024·Granted Nov 4, 2025·0 cites·20 claims
- 1264US6709787B2Polycarbon sulfide, process for preparing the same and nonaqueous electrolyte battery comprising the sameHITACHI MAXELL·Filed 2001·Granted Mar 23, 2004·9 cites·2 claims
- 1363US11684911B2Method for manufacturing catalyst and catalystSUBARU CORP·Filed 2021·Granted Jun 27, 2023·0 cites·9 claims
- 1463US6593031B1Nickel metal-hydride cellHITACHI MAXELL·Filed 2000·Granted Jul 15, 2003·6 cites·4 claims
- 1561US6562520B1Polymer electrolyte and rechargeable cell comprising the sameHITACHI MAXELL·Filed 2000·Granted May 13, 2003·5 cites·9 claims
- 1661US4996089AOptical data recording mediumHITACHI MAXELL·Filed 1989·Granted Feb 26, 1991·12 cites·16 claims
- 1760USD994829SFishing reelGLOBERIDE INC·Filed 2020·Granted Aug 8, 2023·3 cites·1 claims
- 1860US6812540B2Semiconductor integrated circuit deviceHITACHI LTD·Filed 2002·Granted Nov 2, 2004·6 cites·17 claims
- 1959US6905794B2Air-hydrogen batteryHITACHI MAXELL·Filed 2001·Granted Jun 14, 2005·5 cites·14 claims
- 2059US6828242B2Method for manufacturing semiconductor integrated circuit deviceHITACHI LTD·Filed 2002·Granted Dec 7, 2004·6 cites·11 claims
- 2157US5912090ANickel-hydrogen stacked battery packHITACHI MAXELL·Filed 1997·Granted Jun 15, 1999·31 cites·7 claims
- 2256US2025251674A1Electrostatic charge image developing carrier, electrostatic charge image developer, process cartridge, image forming method, and image forming apparatusFUJIFILM BUSINESS INNOVATION CORP·Filed 2024·Application pending·0 cites
- 2356US2025264823A1Image forming apparatus and image forming methodFUJIFILM BUSINESS INNOVATION CORP·Filed 2024·Application pending·0 cites
- 2455US2025053108A1Carrier for electrostatic image development, electrostatic image developer, process cartridge, image forming apparatus, and image forming methodFUJIFILM BUSINESS INNOVATION CORP·Filed 2024·Application pending·0 cites
- 2553US7875518B2Semiconductor device having silicon layer in a gate electrodeELPIDA MEMORY INC·Filed 2009·Granted Jan 25, 2011·0 cites·19 claims
- 2653US7687849B2Method for manufacturing semiconductor integrated circuit deviceELPIDA MEMORY INC·Filed 2008·Granted Mar 30, 2010·0 cites·15 claims
- 2753US6287912B1Method of fabricating semiconductor deviceHITACHI LTD·Filed 1999·Granted Sep 11, 2001·18 cites·17 claims
- 2851US7417291B2Method for manufacturing semiconductor integrated circuit deviceELPIDA MEMORY INC·Filed 2007·Granted Aug 26, 2008·0 cites·14 claims
- 2951US6051333ACell comprising spirally wound electrodesHITACHI MAXELL·Filed 1996·Granted Apr 18, 2000·22 cites·10 claims
- 3049US4808499ALithium secondary batteryHITACHI MAXELL·Filed 1987·Granted Feb 28, 1989·10 cites·10 claims
- 3149US4707718ARead-only memoryHITACHI LTD·Filed 1984·Granted Nov 17, 1987·13 cites·12 claims
- 3249US2024118642A1Toner for electrostatic image development, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming methodFUJIFILM BUSINESS INNOVATION CORP·Filed 2023·Application pending·0 cites
- 3348US7598549B2Semiconductor device having a silicon layer in a gate electrodeELPIDA MEMORY INC·Filed 2005·Granted Oct 6, 2009·0 cites·7 claims
- 3448US5140252AMethod of charging secondary batteriesHITACHI MAXELL·Filed 1991·Granted Aug 18, 1992·24 cites·12 claims
- 3547US7224034B2Method for manufacturing semiconductor integrated circuit deviceELPIDA MEMORY INC·Filed 2004·Granted May 29, 2007·2 cites·9 claims
- 3647US2005208716A1Semiconductor integrated circuit device and production method thereofNEC CORP·Filed 2005·Application pending·0 cites
- 3747US2009049749A1Hydrogen-Generating Material and Hydrogen GeneratorMIKI TAKESHI·Filed 2006·Application pending·0 cites
- 3846US2023168598A1Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming methodFUJIFILM BUSINESS INNOVATION CORP·Filed 2022·Application pending·0 cites
- 3945US7057243B2Hybrid semiconductor device having an n+ (p) doped n-type gate and method of producing the sameHITACHI LTD·Filed 2003·Granted Jun 6, 2006·2 cites·20 claims
- 4045US6198128B1Method of manufacturing a semiconductor device, and semiconductor deviceHITACHI LTD·Filed 1999·Granted Mar 6, 2001·13 cites·26 claims
- 4144US5202202ACell comprising polyaniline positive electrode and method for producing polyaniline powder thereforHITACHI MAXELL·Filed 1990·Granted Apr 13, 1993·13 cites·7 claims
- 4243US2013149572A1Battery unitMATSUO YUZO·Filed 2012·Application pending·0 cites
- 4342USD980380SReel body of fishing reelGLOBERIDE INC·Filed 2020·Granted Mar 7, 2023·1 cites·1 claims
- 4441US2006171645A1Optical fiber cableHITACHI CABLE·Filed 2006·Application pending·0 cites
- 4541US2007031094A1Optical fiber cableHITACHI CABLE·Filed 2006·Application pending·0 cites
- 4641US2007241400A1Semiconductor deviceELPIDA MEMORY INC·Filed 2007·Application pending·0 cites
- 4741US2004104416A1Semiconductor integrated circuit device and production method thereofHITACHI LTD·Filed 2003·Application pending·0 cites
- 4840US7998637B2Liquid fuel cell with a planer electrolyte layerHITACHI MAXELL·Filed 2003·Granted Aug 16, 2011·0 cites·10 claims
- 4940US4367269ASolid electrolyteHITACHI LTD·Filed 1980·Granted Jan 4, 1983·8 cites·1 claims
- 5039US2013057288A1Magnetic measurement system and method for measuring magnetic fieldOGATA KUNIOMI·Filed 2012·Application pending·0 cites
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →