Inventor · disambiguated record
Kenzo Hanawa
Also filed as: HANAWA KENZO
43 granted patents·15 pending applications·395 citations·filing 1987–2018
98Inventor score
Files withSHOWA DENKO KK33MIKI HISAYUKI7MITSUI MINING & SMELTING CO7HANAWA KENZO4MITSUI MINING AND SMELTING COM2
Top patents by PatentIndex Score
58 records- 0192US6926977B2Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2002·Granted Aug 9, 2005·37 cites·12 claims
- 0289US8309982B2Group-III nitride semiconductor light-emitting device, method for manufacturing the same, and lampHANAWA KENZO·Filed 2009·Granted Nov 13, 2012·14 cites·8 claims
- 0388US5938837ACerium oxide ultrafine particles and method for preparing the sameMITSUI MINING & SMELTING CO·Filed 1996·Granted Aug 17, 1999·72 cites·18 claims
- 0487US8471266B2Group III nitride semiconductor multilayer structure and production method thereofHANAWA KENZO·Filed 2012·Granted Jun 25, 2013·7 cites·18 claims
- 0587US8211727B2Group III nitride semiconductor multilayer structure and production method thereofHANAWA KENZO·Filed 2009·Granted Jul 3, 2012·11 cites·17 claims
- 0683US8168460B2Method for manufacturing group III nitride compound semiconductor light-emitting device, group III nitride compound semiconductor light-emitting device, and lampMIKI HISAYUKI·Filed 2007·Granted May 1, 2012·8 cites·14 claims
- 0778US8669129B2Method for producing group III nitride semiconductor light-emitting device, group III nitride semiconductor light-emitting device, and lampMIKI HISAYUKI·Filed 2009·Granted Mar 11, 2014·6 cites·40 claims
- 0877US8012784B2Method for producing group III nitride semiconductor light emitting device, group III nitride semiconductor light emitting device, and lampSHOWA DENKO KK·Filed 2009·Granted Sep 6, 2011·5 cites·16 claims
- 0976US5766279APolishing agent, method for producing the same and method for polishingMITSUI MINING & SMELTING CO·Filed 1996·Granted Jun 16, 1998·47 cites·11 claims
- 1075US8378369B2Light emitting unit, light emitting module, and display deviceSHOWA DENKO KK·Filed 2009·Granted Feb 19, 2013·7 cites·25 claims
- 1174US11820862B2Organic fluorine compound, lubricant, and processing method of magnetic recording mediumSHOWA DENKO KK·Filed 2018·Granted Nov 21, 2023·0 cites·12 claims
- 1273US8882971B2Sputtering apparatus and manufacturing method of semiconductor light-emitting elementMIKI HISAYUKI·Filed 2011·Granted Nov 11, 2014·2 cites·2 claims
- 1372US11525032B2Organic fluorine compound, lubricant, and processing method of magnetic recording mediumSHOWA DENKO KK·Filed 2018·Granted Dec 13, 2022·0 cites·6 claims
- 1471US8389313B2Deposition method of III group nitride compound semiconductor laminated structureMIKI HISAYUKI·Filed 2007·Granted Mar 5, 2013·3 cites·12 claims
- 1570US8097482B2Method for manufacturing group III nitride semiconductor, method for manufacturing group III nitride semiconductor light-emitting device, group III nitride semiconductor light-emitting device, and lampHANAWA KENZO·Filed 2008·Granted Jan 17, 2012·3 cites·21 claims
- 1668US6395332B1Fine copper powder and process for producing the sameMITSUI MINING AND SMELTING COM·Filed 1999·Granted May 28, 2002·24 cites·2 claims
- 1767US8227284B2Group-III nitride compound semiconductor light-emitting device, method of manufacturing group-III nitride compound semiconductor light-emitting device, and lampMIKI HISAYUKI·Filed 2007·Granted Jul 24, 2012·2 cites·14 claims
- 1867US7585690B2Process for producing group III nitride compound semiconductor light emitting device, group III nitride compound semiconductor light emitting device and lampSHOWA DENKO KK·Filed 2007·Granted Sep 8, 2009·2 cites·13 claims
- 1967US4776885ASintered composite materials with short metal fibers as matrixNAKAGAWA TAKEO·Filed 1987·Granted Oct 11, 1988·23 cites·7 claims
- 2066US8148712B2Group III nitride compound semiconductor stacked structureMIKI HISAYUKI·Filed 2007·Granted Apr 3, 2012·2 cites·27 claims
- 2164US6673134B2Fine copper powder and process for producing the sameMITSUI MINING & SMELTING CO·Filed 2001·Granted Jan 6, 2004·6 cites·4 claims
- 2262US5951724AFine particulate polishing agent, method for producing the same and method for producing semiconductor devicesMITSUI MINING & SMELTING CO·Filed 1998·Granted Sep 14, 1999·26 cites·11 claims
- 2360US2018336924A1Recording medium, method of manufacturing fullerene thin film, recording reproducing apparatus, information recording method, and information reading methodSHOWA DENKO KK·Filed 2018·Application pending·0 cites
- 2459US9349403B2Lubricant for magnetic recording medium, magnetic recording medium, manufacturing method of magnetic recording medium, and magnetic recording and reproducing deviceSHOWA DENKO KK·Filed 2014·Granted May 24, 2016·1 cites·6 claims
- 2558US8557092B2Sputtering deposition apparatus and backing plate for use in sputtering deposition apparatusMIKI HISAYUKI·Filed 2007·Granted Oct 15, 2013·0 cites·8 claims
- 2657US10422021B2Method for producing vanadium compound, method for producing vanadium solution, and method for producing redox flow battery electrolyteSHOWA DENKO KK·Filed 2018·Granted Sep 24, 2019·0 cites·17 claims
- 2757US8802187B2Solar cell and process for producing the sameIKENOUE YOSHIAKI·Filed 2010·Granted Aug 12, 2014·1 cites·4 claims
- 2857US7935980B2Method of manufacturing a semiconductor light-emitting deviceSHOWA DENKO KK·Filed 2007·Granted May 3, 2011·1 cites·10 claims
- 2956US11043680B2Electrode material including small diameter, carbon nanotubes bridging large diameter carbon nanotubes, redox flow battery electrode, redox flow battery, and method for producing electrode materialSHOWA DENKO KK·Filed 2014·Granted Jun 22, 2021·0 cites·14 claims
- 3055US5885369ASolder powder, method for making the solder powder and solder paste using the solder powderMITSUI MINING & SMELTING CO·Filed 1997·Granted Mar 23, 1999·17 cites·11 claims
- 3152US10790531B2Collector plate and redox flow batterySHOWA DENKO KK·Filed 2017·Granted Sep 29, 2020·0 cites·14 claims
- 3252US10680248B2Electrode material, electrode of redox flow battery, and redox flow batterySHOWA DENKO KK·Filed 2016·Granted Jun 9, 2020·0 cites·20 claims
- 3352US2009205707A1Solar cell and method for producing the sameSHOWA DENKO KK·Filed 2009·Application pending·0 cites
- 3451US10727498B2Redox flow battery electrode, and redox flow batterySHOWA DENKO KK·Filed 2015·Granted Jul 28, 2020·0 cites·10 claims
- 3551US2008223434A1Solar cell and process for producing the sameSHOWA DENKO KK·Filed 2008·Application pending·0 cites
- 3650US9672857B2Lubricant for magnetic recording medium, magnetic recording medium, manufacturing method of magnetic recording medium, and magnetic recording and reproducing deviceSHOWA DENKO KK·Filed 2014·Granted Jun 6, 2017·0 cites·6 claims
- 3750US6727010B2Magnetic recording medium, production process thereof, magnetic recording and reproducing apparatus, and medium substrateSHOWA DENKO KK·Filed 2001·Granted Apr 27, 2004·8 cites·7 claims
- 3849US6334905B1Unleaded solder powder and production method thereforMITSUI MINING AND SMELTING COM·Filed 1999·Granted Jan 1, 2002·14 cites·7 claims
- 3948US7737434B2Light-emitting diode illumination sourceSHOWA DENKO KK·Filed 2005·Granted Jun 15, 2010·0 cites·11 claims
- 4048US2009289270A1Group iii nitride semiconductor multilayer structure and production method thereofSHOWA DENKO KK·Filed 2009·Application pending·0 cites
- 4147US10008232B2Recording medium, method of manufacturing fullerene thin film, recording reproducing apparatus, information recording method, and information reading methodSHOWA DENKO KK·Filed 2016·Granted Jun 26, 2018·0 cites·11 claims
- 4245US2008121924A1Apparatus for manufacturing group iii nitride compound semiconductor light-emitting device, method of manufacturing group iii nitride compound semiconductor light-emitting device, group iii nitride compound semiconductor light-emitting device, and lampSHOWA DENKO KK·Filed 2007·Application pending·0 cites
- 4344US10707514B2Redox flow batterySHOWA DENKO KK·Filed 2018·Granted Jul 7, 2020·0 cites·15 claims
- 4444US2003170502A1Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2003·Application pending·0 cites
- 4543US6083476ABlack ultrafine magnetite particles and process for preparing the sameMITSUI MINING & SMELTING CO·Filed 1997·Granted Jul 4, 2000·6 cites·2 claims
- 4643US6004526AProcess for preparing cathode active material for lithium secondary batteryMITSUI & MINING COMPANY LTD·Filed 1998·Granted Dec 21, 1999·15 cites·7 claims
- 4742US2020075968A1Collector plate and redox flow batterySHOWA DENKO KK·Filed 2017·Application pending·0 cites
- 4842US2019393533A1Collector plate and redox flow batterySHOWA DENKO KK·Filed 2017·Application pending·0 cites
- 4942US2002009620A1Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2001·Application pending·0 cites
- 5041US5938798ACathodic active material composition for dry cells, method for preparing the same, and alkaline batteryMITSUI MINING & SMELTING CO·Filed 1996·Granted Aug 17, 1999·12 cites·3 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
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