Inventor · disambiguated record
Keiji Okada
Also filed as: HABARA KOHEI · OKADA KEIJI
100 granted patents·12 pending applications·2,625 citations·filing 1978–2023
99Inventor score
Files withMITSUI CHEMICALS INC27MITSUI PETROCHEMICAL IND16OLYMPUS CORP11MURATA MANUFACTURING CO9OLYMPUS IMAGING CORP8
Top patents by PatentIndex Score
112 records- 0198US9748923B2Elastic wave device and manufacturing method for sameMURATA MANUFACTURING CO·Filed 2013·Granted Aug 29, 2017·255 cites·19 claims
- 0298USD588152STransitional image for a portion of a display screen of a digital cameraOLYMPUS IMAGING CORP·Filed 2007·Granted Mar 10, 2009·136 cites·1 claims
- 0398USD588153STransitional image for a portion of a display screen of a digital cameraOLYMPUS IMAGING CORP·Filed 2007·Granted Mar 10, 2009·153 cites·1 claims
- 0498USD588151STransitional image for a portion of a display screen of a digital cameraOLYMPUS IMAGING CORP·Filed 2007·Granted Mar 10, 2009·159 cites·1 claims
- 0595US7820607B2Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil compositionsMITSUI CHEMICALS INC·Filed 2005·Granted Oct 26, 2010·28 cites·5 claims
- 0695US7488789B2Propylene copolymer, polypropylene composition, and uses thereof, transition metal compounds and catalyst for olefin polymerizationMITSUI CHEMICALS INC·Filed 2003·Granted Feb 10, 2009·45 cites·4 claims
- 0795US6589920B2Viscosity modifier for lubricating oil and lubricating oil compositionMITSUI CHEMICALS INC·Filed 2001·Granted Jul 8, 2003·59 cites·17 claims
- 0895US6289673B1Air-fuel ratio control for exhaust gas purification of engineNISSAN MOTOR·Filed 1999·Granted Sep 18, 2001·84 cites·20 claims
- 0994USD588605STransitional image for a portion of a display screen of a digital cameraOLYMPUS IMAGING CORP·Filed 2007·Granted Mar 17, 2009·62 cites·1 claims
- 1094US7022766B2Olefin block copolymer, viscosity index improver for lubricating oils and lubricating oil compositionMITSUI CHEMICALS INC·Filed 2003·Granted Apr 4, 2006·50 cites·3 claims
- 1194US5656498AFreeze-dried blood cells, stem cells and platelets, and manufacturing method for the sameNIPPON TELEGRAPH & TELEPHONE·Filed 1995·Granted Aug 12, 1997·107 cites·16 claims
- 1293US10171061B2Elastic wave deviceMURATA MANUFACTURING CO·Filed 2017·Granted Jan 1, 2019·10 cites·23 claims
- 1393US9276558B2Surface acoustic wave device including a confinement layerMURATA MANUFACTURING CO·Filed 2014·Granted Mar 1, 2016·14 cites·16 claims
- 1492US7728078B2Propylene copolymer, polypropylene composition and uses thereof, transition metal compound and olefin polymerization catalystMITSUI CHEMICALS INC·Filed 2008·Granted Jun 1, 2010·10 cites·3 claims
- 1591US7767313B2Polypropylene composite film comprising a metallocene-catalyzed propylene/1-butene random copolymerMITSUI CHEMICALS INC·Filed 2008·Granted Aug 3, 2010·10 cites·2 claims
- 1691US5610254AEthylene-α-olefin-nonconjugated polyene random copolymer, rubber composition, and process for preparing the random copolymerMITSUI PETROCHEMICAL IND·Filed 1995·Granted Mar 11, 1997·61 cites·14 claims
- 1790US11863158B2Acoustic wave resonator and multiplexerMURATA MANUFACTURING CO·Filed 2020·Granted Jan 2, 2024·3 cites·19 claims
- 1890US8188191B2Polyolefin polymer containing vinyl groups at both ends and composition thereofIKENAGA SHIGENOBU·Filed 2007·Granted May 29, 2012·14 cites·13 claims
- 1990US6525007B2Viscosity modifier for lubricating oil and lubricating oil compositionMITSUI CHEMICALS INC·Filed 2001·Granted Feb 25, 2003·37 cites·9 claims
- 2090US6516612B1Exhaust gas purification device for an engine and A/F ratio control for early activating a NOx trapping catalystNISSAN MOTOR·Filed 2000·Granted Feb 11, 2003·59 cites·26 claims
- 2189US7803888B2Olefin-based polymers and uses thereofMITSUI CHEMICALS INC·Filed 2005·Granted Sep 28, 2010·11 cites·14 claims
- 2288US10469055B2Filter device including longitudinally coupled resonator elastic wave filter and elastic wave resonatorMURATA MANUFACTURING CO·Filed 2017·Granted Nov 5, 2019·6 cites·20 claims
- 2388US6310164B1Unsaturated copolymers, processes for preparing the same, and compositions containing the sameMITSU CHEMICALS INC·Filed 1998·Granted Oct 30, 2001·71 cites·27 claims
- 2488US6235818B1Hot melt adhesive composition containing α-olefin/aromatic vinyl compound random copolymerMITSUI CHEMICALS·Filed 1998·Granted May 22, 2001·61 cites·13 claims
- 2587USD589973STransitional image for a portion of a display screen of a digital cameraOLYMPUS IMAGING CORP·Filed 2007·Granted Apr 7, 2009·36 cites·1 claims
- 2687US6635727B1Ethylene copolymer rubber, process for producing the same, and useMITSUI CHEMICALS INC·Filed 2000·Granted Oct 21, 2003·30 cites·42 claims
- 2787US6462136B1Ethylene copolymer and process for producing the same, resin composition containing the copolymer, and uses of theseMITSUI CHEMICALS INC·Filed 1999·Granted Oct 8, 2002·56 cites·10 claims
- 2886US8410035B2Viscosity modifier of lubricating oil for power transmission system and lubricating oil composition for power transmission systemKANESHIGE RYOUSUKE·Filed 2006·Granted Apr 2, 2013·9 cites·5 claims
- 2986US7041116B2Intravascular obstruction removing wire and medical instrumentMARUHO HATSUJYO KOGYO LTD·Filed 2002·Granted May 9, 2006·224 cites·15 claims
- 3085US5807948AVulcanizable rubber composition containing ehtylene-α-olefin-nonconjugated polyene random copolymerMITSUI PETROCHEMICAL IND·Filed 1997·Granted Sep 15, 1998·34 cites·6 claims
- 3184US8096744B2Wafer processing system, wafer processing method, and ion implantation systemOKADA KEIJI·Filed 2005·Granted Jan 17, 2012·14 cites·10 claims
- 3283USD795278SDigital camera display screen with transitional graphical user interfaceOLYMPUS CORP·Filed 2016·Granted Aug 22, 2017·25 cites·1 claims
- 3382US7575585B2Intravascular obstruction removing wire and medical instrumentTERUMO CORP·Filed 2005·Granted Aug 18, 2009·29 cites·26 claims
- 3479US6303727B1Linear triene compound and copolymerMITSUI CHEMICALS INC·Filed 1999·Granted Oct 16, 2001·21 cites·9 claims
- 3577US10506151B2Information acquisition apparatusOLYMPUS CORP·Filed 2018·Granted Dec 10, 2019·2 cites·8 claims
- 3677US8974983B2Electrical conductive member and polymer electrolyte fuel cell using the sameHIMENO TOMOKATSU·Filed 2009·Granted Mar 10, 2015·4 cites·14 claims
- 3776US5786403AFoamable olefin thermoplastic elastomer compositions and foamed products thereofMITSUI PETROCHEMICAL IND·Filed 1997·Granted Jul 28, 1998·36 cites·9 claims
- 3875US9392177B2Image processing device, imaging device and image processing method capable of adjusting color of an imageOLYMPUS CORP·Filed 2014·Granted Jul 12, 2016·3 cites·11 claims
- 3974US11321618B2Learning device, image pickup apparatus, image processing device, learning method, non-transient computer-readable recording medium for recording learning program, display control method and inference model manufacturing methodOLYMPUS CORP·Filed 2019·Granted May 3, 2022·2 cites·15 claims
- 4074US5308090ASpiral wound gasketNIPPON PILLAR PACKING·Filed 1992·Granted May 3, 1994·38 cites·3 claims
- 4173USD751101SDigital camera display screen with transitional graphical user interfaceOLYMPUS IMAGING CORP·Filed 2013·Granted Mar 8, 2016·19 cites·1 claims
- 4272US8033993B2Endoscope device and display deviceOLYMPUS MEDICAL SYSTEMS CORP·Filed 2007·Granted Oct 11, 2011·10 cites·21 claims
- 4372US6764985B2Viscosity modifier for lubricating oil and lubricating oil compositionMITSUI CHEMICALS INC·Filed 2001·Granted Jul 20, 2004·12 cites·13 claims
- 4472US6595372B1Filter deviceHONDA MOTOR CO LTD·Filed 1999·Granted Jul 22, 2003·47 cites·29 claims
- 4572US5728744AOlefin thermoplastic elastomer foamed products and processes for preparing the sameMITSUI PETROCHEMICAL IND·Filed 1996·Granted Mar 17, 1998·30 cites·28 claims
- 4672US4207435AChannel translators for use in time division digital exchangersNIPPON TELEGRAPH & TELEPHONE·Filed 1978·Granted Jun 10, 1980·12 cites·8 claims
- 4771US7187143B2Mover device and semiconductor manufacturing apparatus and methodSUMITOMO EATON NOVA·Filed 2004·Granted Mar 6, 2007·16 cites·48 claims
- 4871US5696214AProcess for preparing ethylene-α-olefin-nonconjugated polyene random copolymerMITSUI PETROCHEMICAL IND·Filed 1995·Granted Dec 9, 1997·21 cites·2 claims
- 4970US8063146B2Thermoplastic elastomer compositionIMAI TADASHI·Filed 2008·Granted Nov 22, 2011·3 cites·11 claims
- 5070US7622433B2Lubricating oil composition and internal combustion engine oilMITSUI CHEMICALS INC·Filed 2003·Granted Nov 24, 2009·7 cites·3 claims
Showing the top 50 of 112 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →