Inventor · disambiguated record
Keishi Ohashi
Also filed as: OHASHI KEISHI
44 granted patents·4 pending applications·745 citations·filing 1992–2020
98Inventor score
Top patents by PatentIndex Score
48 records- 0195US11527054B2Article management system, information processing apparatus, and control method and control program of information processing apparatusNEC CORP·Filed 2020·Granted Dec 13, 2022·3 cites·18 claims
- 0293US6624987B1Magnetic head with a tunnel junction including metallic material sandwiched between one of an oxide and a nitride of the metallic materialNEC CORP·Filed 2000·Granted Sep 23, 2003·41 cites·3 claims
- 0393US6542342B1Magnetoresistive effect transducer having longitudinal bias layer directly connected to free layerNEC CORP·Filed 1999·Granted Apr 1, 2003·69 cites·1 claims
- 0492US8183656B2PhotodiodeOKAMOTO DAISUKE·Filed 2007·Granted May 22, 2012·21 cites·17 claims
- 0592US6714374B1Magnetoresistive sensor, magnetoresistive head, and magnetic recording/reproducing apparatusNEC CORP·Filed 2000·Granted Mar 30, 2004·36 cites·90 claims
- 0691US8467637B2Waveguide path coupling-type photodiodeFUJIKATA JUNICHI·Filed 2008·Granted Jun 18, 2013·29 cites·21 claims
- 0791US7800193B2Photodiode, method for manufacturing such photodiode, optical communication device and optical interconnection moduleNEC CORP·Filed 2007·Granted Sep 21, 2010·14 cites·44 claims
- 0891US7162109B2Optical modulator and method of manufacturing sameNEC CORP·Filed 2005·Granted Jan 9, 2007·12 cites·29 claims
- 0990US7042319B2Thin film electromagnet and switching device comprising itDENSO CORP·Filed 2002·Granted May 9, 2006·36 cites·31 claims
- 1090US6507464B1Co-Fe-Ni magnetic film having a high saturation magnetic flux density, composite thin film magnetic head using the film and magnetic memory device using the headNEC CORP·Filed 2000·Granted Jan 14, 2003·29 cites·21 claims
- 1189US6950290B2Magnetoresistive effect transducer having longitudinal bias layer directly connected to free layerNEC CORP·Filed 2002·Granted Sep 27, 2005·21 cites·18 claims
- 1288US6999287B2Magneto-resistance effect element, magneto-resistance effect head, magneto-resistance transducer system, and magnetic storage systemNEC CORP·Filed 2004·Granted Feb 14, 2006·21 cites·11 claims
- 1388US5828533AThin film magnetic head with differing saturation magnetic flux density films and spacer between floating surface and coil patternsNEC CORP·Filed 1996·Granted Oct 27, 1998·62 cites·15 claims
- 1487US10885374B2Article management system, information processing apparatus, and control method and control program of information processing apparatusNEC CORP·Filed 2019·Granted Jan 5, 2021·3 cites·10 claims
- 1586US6507466B1Magnetoresistive effect head with diode in parallelNEC CORP·Filed 2000·Granted Jan 14, 2003·21 cites·10 claims
- 1686US6490139B1Magneto-resistive element and magnetic head for data writing/readingNEC CORP·Filed 2000·Granted Dec 3, 2002·33 cites·11 claims
- 1785US7272270B2Optical modulator and method of manufacturing sameNEC CORP·Filed 2006·Granted Sep 18, 2007·7 cites·22 claims
- 1885US6452204B1Tunneling magnetoresistance transducer and method for manufacturing the sameNEC CORP·Filed 1999·Granted Sep 17, 2002·91 cites·27 claims
- 1984US7161774B2Magneto-resistance effect element, magneto-resistance effect head, magneto-resistance transducer system, and magnetic storage systemNEC CORP·Filed 2006·Granted Jan 9, 2007·7 cites·5 claims
- 2082US9721130B2Article management systemNEC CORP·Filed 2013·Granted Aug 1, 2017·3 cites·10 claims
- 2182US7372673B2Magnetoresistive effect transducer having longitudinal bias layer and control layer directly connected to free layerNEC CORP·Filed 2005·Granted May 13, 2008·7 cites·5 claims
- 2282US7369375B2Magneto-resistance effect element and magneto-resistance effect headNEC CORP·Filed 2006·Granted May 6, 2008·6 cites·15 claims
- 2382US6903908B2Magnetoresistive effect sensor with barrier layer smoothed by composition of lower shield layerNEC CORP·Filed 2001·Granted Jun 7, 2005·16 cites·7 claims
- 2481US6798626B2Magnetoresistive effect element having a ferromagnetic tunnel junction film with an oxide or nitride of a metallic materialNEC CORP·Filed 2003·Granted Sep 28, 2004·13 cites·3 claims
- 2581US6747853B2Magneto-resistance effect element, magneto-resistance effect head, magneto-resistance transducer system, and magnetic storage systemNEC CORP·Filed 2003·Granted Jun 8, 2004·13 cites·5 claims
- 2680US6718621B1Magnetoresistive head production methodNEC CORP·Filed 2000·Granted Apr 13, 2004·15 cites·12 claims
- 2779US6120918ACo-Fe-Ni thin magnetic film, process for producing the same, composite thin film magnetic head, and magnetic recording deviceNEC CORP·Filed 1998·Granted Sep 19, 2000·32 cites·18 claims
- 2878US6934132B2Magneto-resistance effect element, magneto-resistance effect head, magneto-resistance transducer system, and magnetic storage systemNEC CORP·Filed 2001·Granted Aug 23, 2005·12 cites·5 claims
- 2973US10438084B2Article management system, information processing apparatus, and control method and control program of information processing apparatusNEC CORP·Filed 2014·Granted Oct 8, 2019·2 cites·14 claims
- 3069US5856898ASpiral coil pattern including same layer spiral patterns suitable for use in a thin film headNEC CORP·Filed 1992·Granted Jan 5, 1999·18 cites·8 claims
- 3167US6493195B1Magnetoresistance element, with lower electrode anti-erosion/flaking layerNEC CORP·Filed 2000·Granted Dec 10, 2002·13 cites·16 claims
- 3266US7298596B2Magneto-resistance effect element, magneto-resistance effect head, magneto-resistance transducer system, and magnetic storage systemNEC CORP·Filed 2006·Granted Nov 20, 2007·2 cites·7 claims
- 3366US7265949B2Magneto-resistance effect element, magneto-resistance effect head, magneto-resistance transducer system, and magnetic storage systemNEC CORP·Filed 2006·Granted Sep 4, 2007·2 cites·7 claims
- 3466US6134091ASpin-valve magneto-resistive head with horizontal type structureNEC CORP·Filed 1998·Granted Oct 17, 2000·20 cites·8 claims
- 3564US7277261B2Magneto-resistance effect element, magneto-resistance effect head, magneto-resistance transducer system, and magnetic storage systemNEC CORP·Filed 2006·Granted Oct 2, 2007·2 cites·11 claims
- 3663US7120326B2Optical element, optical integrated device, optical information transmission system, and manufacturing methods thereofNAT INST OF ADVANCED IND SCIEN·Filed 2004·Granted Oct 10, 2006·7 cites·21 claims
- 3761US8023832B2Light receiving circuit and digital systemNEC CORP·Filed 2006·Granted Sep 20, 2011·2 cites·22 claims
- 3858US10049239B2Article management systemNEC CORP·Filed 2017·Granted Aug 14, 2018·0 cites·11 claims
- 3956US7173793B2Recording head, recording head manufacturing method, combined head and magnetic recording/reproduction apparatusNEC CORP·Filed 2004·Granted Feb 6, 2007·2 cites·12 claims
- 4055US6795271B2Recording head, recording head manufacturing method, combined head and magnetic recording/reproduction apparatusNEC CORP·Filed 2000·Granted Sep 21, 2004·2 cites·6 claims
- 4153US9798908B2Object detection system, object detection method, and non-transitory computer-readable medium storing object detection programNEC CORP·Filed 2014·Granted Oct 24, 2017·0 cites·19 claims
- 4250US2010200941A1Photodiode, optical communication device, and optical interconnection moduleFUJIKATA JUNICHI·Filed 2007·Application pending·0 cites
- 4347US7158355B2Magneto-resistance effect element, magneto-resistance effect head, magneto-resistance transducer system, and magnetic storage systemNEC CORP·Filed 2005·Granted Jan 2, 2007·0 cites·4 claims
- 4443US9575216B2Infrared-transmitting film, method for producing infrared-transmitting film, infrared optical component, and infrared deviceAKEDO JUN·Filed 2012·Granted Feb 21, 2017·0 cites·13 claims
- 4543US2002164828A1Tunneling magnetoresistance transducer and method for manufacturing the sameNEC CORP·Filed 2002·Application pending·0 cites
- 4641US8233753B2Electric field sensor, magnetic field sensor, electromagnetic field sensor and electromagnetic field measuring system using these sensorsIWANAMI MIZUKI·Filed 2006·Granted Jul 31, 2012·0 cites·19 claims
- 4740US2020192171A1Electrochromic element and display system using sameNAT INST MATERIALS SCIENCE·Filed 2018·Application pending·0 cites
- 4839US2007253051A1Optical DeviceISHIHARA KUNIHIKO·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →