Inventor · disambiguated record
Masato Sakai
Also filed as: SAKAI MASATO
104 granted patents·10 pending applications·2,293 citations·filing 1977–2018
99Inventor score
Files withHITACHI KOKI KK58OKI DATA KK14OKI ELECTRIC IND CO LTD5TOKYO SHIBAURA ELECTRIC CO5ROHM CO LTD4
Top patents by PatentIndex Score
114 records- 0199US6679406B2Power toolHITACHI KOKI KK·Filed 2002·Granted Jan 20, 2004·113 cites·12 claims
- 0295USD568239SBattery packHITACHI KOKI KK·Filed 2007·Granted May 6, 2008·73 cites·1 claims
- 0395USD562228SBattery packHITACHI KOKI KK·Filed 2007·Granted Feb 19, 2008·68 cites·1 claims
- 0495USD504111SBattery pack for portable power toolHITACHI KOKI KK·Filed 2004·Granted Apr 19, 2005·66 cites·1 claims
- 0595USD477205SImpact driverHITACHI KOKI KK·Filed 2001·Granted Jul 15, 2003·60 cites·1 claims
- 0695USD439123SPortable electric drillHITACHI KOKI KK·Filed 2000·Granted Mar 20, 2001·64 cites·1 claims
- 0794USD567615SPortable electric driverHITACHI KOKI KK·Filed 2007·Granted Apr 29, 2008·59 cites·1 claims
- 0894USD557749SMusic game control deviceKONAMI DIGITAL ENTERTAINMENT·Filed 2005·Granted Dec 18, 2007·50 cites·1 claims
- 0994US7108079B2Electric power toolHITACHI KOKI KK·Filed 2002·Granted Sep 19, 2006·45 cites·12 claims
- 1094US6905052B2Power toolHITACHI KOKI KK·Filed 2003·Granted Jun 14, 2005·45 cites·26 claims
- 1194USD484385SPortable electric driverHITACHI KOKI KK·Filed 2003·Granted Dec 30, 2003·59 cites·1 claims
- 1293USD530270SBattery packHITACHI KOKI KK·Filed 2005·Granted Oct 17, 2006·53 cites·1 claims
- 1392US7333762B2Fixing apparatus having a pressurizing mechanismOKI DATA KK·Filed 2005·Granted Feb 19, 2008·18 cites·48 claims
- 1492USD553562SBattery packHITACHI KOKI KK·Filed 2006·Granted Oct 23, 2007·51 cites·1 claims
- 1592US7140451B2Portable tool having cover and label to be stuck on the portable tool for identificationHITACHI KOKI KK·Filed 2003·Granted Nov 28, 2006·61 cites·24 claims
- 1692US5206293ARubber composition and crosslinkable rubber compositionJAPAN SYNTHETIC RUBBER CO LTD·Filed 1990·Granted Apr 27, 1993·74 cites·14 claims
- 1791USD544436SBattery packHITACHI KOKI KK·Filed 2006·Granted Jun 12, 2007·52 cites·1 claims
- 1891USD524136SPortable electric driverHITACHI KOKI KK·Filed 2005·Granted Jul 4, 2006·46 cites·1 claims
- 1989USD792708SStorage case for portable toolHITACHI KOKI KK·Filed 2015·Granted Jul 25, 2017·40 cites·1 claims
- 2089US7681661B2Electric power toolHITACHI KOKI KK·Filed 2005·Granted Mar 23, 2010·25 cites·16 claims
- 2189US5321471AApparatus for and method of forming imageOKI ELECTRIC IND CO LTD·Filed 1992·Granted Jun 14, 1994·36 cites·5 claims
- 2288US5740493AElectrophotographic recording apparatus having reverse-charged toner removing meansOKI DATA KK·Filed 1995·Granted Apr 14, 1998·51 cites·34 claims
- 2388US4123199ARotor-shaft assemblyTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Oct 31, 1978·71 cites·7 claims
- 2487US7665541B2Electric power tool with coverHITACHI KOKI KK·Filed 2008·Granted Feb 23, 2010·15 cites·2 claims
- 2587US7490746B2Power toolHITACHI KOKI KK·Filed 2006·Granted Feb 17, 2009·20 cites·4 claims
- 2687US5517289AApparatus for and method of forming imageOKI ELECTRIC IND CO LTD·Filed 1995·Granted May 14, 1996·39 cites·5 claims
- 2786US6112037AColor image forming apparatus having a controller for setting printing speeds in dependence on a detected number of colors in an image signalOKI DATA KK·Filed 1999·Granted Aug 29, 2000·37 cites·9 claims
- 2885USD744139SFloodlightHITACHI KOKI KK·Filed 2013·Granted Nov 24, 2015·33 cites·1 claims
- 2985USD440849SPortable electric sawHITACHI KOKI KK·Filed 2000·Granted Apr 24, 2001·32 cites·1 claims
- 3085US4875539AElectric power steering control systemHITACHI LTD·Filed 1988·Granted Oct 24, 1989·45 cites·20 claims
- 3183USD496574SPortable electric drillHITACHI KOKI KK·Filed 2004·Granted Sep 28, 2004·29 cites·1 claims
- 3282US8087556B2Power toolOOMORI KATSUHIRO·Filed 2007·Granted Jan 3, 2012·21 cites·5 claims
- 3382US7344054B2Power toolHITACHI KOKI KK·Filed 2004·Granted Mar 18, 2008·18 cites·20 claims
- 3481USD421702SPortable electric circular sawHITACHI KOKI KK·Filed 1998·Granted Mar 21, 2000·23 cites·1 claims
- 3579US8761621B2Fixation device and image formation apparatusOKI DATA KK·Filed 2012·Granted Jun 24, 2014·2 cites·20 claims
- 3676USD726142SRadio receiverHITACHI KOKI KK·Filed 2013·Granted Apr 7, 2015·21 cites·1 claims
- 3776USD591916SEngine blowerHITACHI KOKI KK·Filed 2008·Granted May 5, 2009·21 cites·1 claims
- 3876US6523267B1Insulating cover for a saber sawHITACHI KOKI KK·Filed 2000·Granted Feb 25, 2003·20 cites·9 claims
- 3975USD475266SPortable electric disc sawHITACHI KOKI KK·Filed 2002·Granted Jun 3, 2003·20 cites·1 claims
- 4074US10940518B2Manufacturing method for press-formed articleFUTABA IND CO LTD·Filed 2018·Granted Mar 9, 2021·1 cites·5 claims
- 4174US7989073B2Epitaxial silicon wafer and fabrication method thereofSUMCO CORP·Filed 2007·Granted Aug 2, 2011·4 cites·2 claims
- 4273US9693470B2Electric device with surrounding protective frameHITACHI KOKI KK·Filed 2014·Granted Jun 27, 2017·3 cites·16 claims
- 4372USD539310SAir compressorHITACHI KOKI KK·Filed 2006·Granted Mar 27, 2007·18 cites·1 claims
- 4472US6907942B2Percussion toolHITACHI KOKI KK·Filed 2003·Granted Jun 21, 2005·22 cites·21 claims
- 4572US4931499ARubber composition derived from fluoroelastomer and ethylene-alpha-olefin copolymer rubber and rubber article formed therefromJAPAN SYNTHETIC RUBBER CO LTD·Filed 1988·Granted Jun 5, 1990·18 cites·20 claims
- 4671US9967920B2Electric device outputting light, wind, heat or soundHITACHI KOKI KK·Filed 2014·Granted May 8, 2018·5 cites·37 claims
- 4771USD735006SPortable electric driverHITACHI KOKI KK·Filed 2014·Granted Jul 28, 2015·16 cites·1 claims
- 4871USD520830SPortable electric circular sawHITACHI KOKI KK·Filed 2005·Granted May 16, 2006·18 cites·1 claims
- 4970USD525098SPortable electric jigsawHITACHI KOKI KK·Filed 2005·Granted Jul 18, 2006·17 cites·1 claims
- 5070US6736967B2Separating agent for enantiomeric isomersDAICEL CHEM·Filed 2002·Granted May 18, 2004·10 cites·5 claims
Showing the top 50 of 114 patent records by PatentIndex Score.
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