Inventor · disambiguated record
Keiji Okamoto
Also filed as: OKAMOTO KEIJI
94 granted patents·20 pending applications·484 citations·filing 1987–2025
99Inventor score
Top patents by PatentIndex Score
114 records- 0194US10408690B2Manufacturing method of heat flux sensor and heat flow generation device for use in the manufacturing methodDENSO CORP·Filed 2016·Granted Sep 10, 2019·7 cites·8 claims
- 0293US7711308B2Cleaning device, process cartridge, and image forming apparatusRICOH KK·Filed 2007·Granted May 4, 2010·16 cites·15 claims
- 0392US8476138B2Semiconductor memory device and a method of manufacturing the same, a method of manufacturing a vertical MISFET and a vertical MISFET, and a method of manufacturing a semiconductor device and a semiconductor deviceCHAKIHARA HIRAKU·Filed 2011·Granted Jul 2, 2013·12 cites·7 claims
- 0492US5132740AWaste toner collecting device for an image recorderRICOH KK·Filed 1991·Granted Jul 21, 1992·50 cites·3 claims
- 0589US4878453AIndicating instrument for automotive vehicleYAZAKI CORP·Filed 1988·Granted Nov 7, 1989·51 cites·7 claims
- 0688US8798516B2Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning deviceOKAMOTO KEIJI·Filed 2011·Granted Aug 5, 2014·5 cites·17 claims
- 0788US7972920B2Semiconductor memory device and a method of manufacturing the same, a method of manufacturing a vertical MISFET and a vertical MISFET, and a method of manufacturing a semiconductor device and a semiconductor deviceHITACHI ULSI SYS CO LTD·Filed 2010·Granted Jul 5, 2011·7 cites·12 claims
- 0887US11391644B2Optical fiber testing method and optical fiber testing deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jul 19, 2022·3 cites·6 claims
- 0986US8712309B2Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning deviceWATANABE KAZUHIKO·Filed 2011·Granted Apr 29, 2014·4 cites·12 claims
- 1082US11828676B2Optical pulse reflectometry and optical pulse reflectometerNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Nov 28, 2023·2 cites·4 claims
- 1182US11598692B2Optical pulse testing method and optical pulse testing deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Mar 7, 2023·2 cites·6 claims
- 1282US11486791B2Backscattering optical amplification device, optical pulse testing device, backscattering optical amplification method and optical pulse testing methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Nov 1, 2022·2 cites·6 claims
- 1382US11467060B2Optical pulse reflectometer and optical pulse reflectometryNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Oct 11, 2022·2 cites·10 claims
- 1481US11754465B2Optical pulse testing device and optical pulse testing methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 12, 2023·2 cites·6 claims
- 1581US10982973B2Position change measuring deviceDENSO CORP·Filed 2018·Granted Apr 20, 2021·2 cites·7 claims
- 1681US10054504B2Apparatus for detecting changes in a load applied there-toDENSO CORP·Filed 2017·Granted Aug 21, 2018·3 cites·20 claims
- 1781US7701020B2Semiconductor memory device and a method of manufacturing the same, a method of manufacturing a vertical MISFET and a vertical MISFET, and a method of manufacturing a semiconductor device and a semiconductor deviceRENESAS TECH CORP·Filed 2009·Granted Apr 20, 2010·5 cites·7 claims
- 1881US7190031B2Semiconductor memory device and a method of manufacturing the same, a method of manufacturing a vertical MISFET and a vertical MISFET, and a method of manufacturing a semiconductor device and a semiconductor deviceHITACHI ULSI SYS CO LTD·Filed 2003·Granted Mar 13, 2007·18 cites·71 claims
- 1981US5661061AProcess for fabricating a semiconductor integrated circuit device having the multi-layered fin structureHITACHI LTD·Filed 1995·Granted Aug 26, 1997·48 cites·13 claims
- 2081US5390006AImaging forming apparatus with improved exhaust flowRICOH KK·Filed 1992·Granted Feb 14, 1995·30 cites·20 claims
- 2180US9998648B2Information processing apparatus, information processing method, photographing system, and programSONY CORP·Filed 2014·Granted Jun 12, 2018·3 cites·22 claims
- 2279US2025229789A1Information provision system, information provision control device and information provision methodDENSO CORP·Filed 2025·Application pending·0 cites
- 2379US2025229788A1Information provision system, information provision control device and information provision methodDENSO CORP·Filed 2025·Application pending·0 cites
- 2478US10054437B2Abnormality estimation apparatus having a heat flow sensor that detects a heat flow caused by an elastic deformation of an elastic bodyDENSO CORP·Filed 2017·Granted Aug 21, 2018·1 cites·5 claims
- 2578US6484000B1Sealing member which prevents contamination when removed and container having the sealing memberRICOH KK·Filed 1998·Granted Nov 19, 2002·29 cites·38 claims
- 2678US2024025420A1Information provision system, information provision control device and information provision methodDENSO CORP·Filed 2023·Application pending·0 cites
- 2777US10069999B2Information processing device, information processing system, and method for controlling information processing deviceSONY CORP·Filed 2015·Granted Sep 4, 2018·2 cites·12 claims
- 2877US8918008B2Connector, charging device incorporating same, and image forming apparatus incorporating the connectorOKAMOTO KEIJI·Filed 2012·Granted Dec 23, 2014·2 cites·13 claims
- 2977US7495289B2Semiconductor memory device and a method of manufacturing the same, a method of manufacturing a vertical MISFET and a vertical MISFET, and a method of manufacturing a semiconductor device and a semiconductor deviceRENESAS TECH CORP·Filed 2006·Granted Feb 24, 2009·4 cites·10 claims
- 3077US4970552AToner contamination preventive meansRICOH KK·Filed 1988·Granted Nov 13, 1990·20 cites·2 claims
- 3174US10464113B2Monitoring deviceDENSO CORP·Filed 2017·Granted Nov 5, 2019·1 cites·11 claims
- 3274US9973616B2Imaging system, imaging device, information processing device, method, and programSONY CORP·Filed 2015·Granted May 15, 2018·2 cites·19 claims
- 3374US9680079B2Production method of thermoelectric converter, production method of electronic device equipped with thermoelectric converter, and thermoelectric converterDENSO CORP·Filed 2013·Granted Jun 13, 2017·3 cites·17 claims
- 3473US7161215B2Semiconductor memory device and method of manufacturing the same, a method of manufacturing a vertical MISFET and a vertical MISFET, and a method of manufacturing a semiconductor device and a semiconductor deviceHITACHI ULSI SYS CO LTD·Filed 2006·Granted Jan 9, 2007·3 cites·9 claims
- 3570US4943128ALight scanning deviceRICOH KK·Filed 1987·Granted Jul 24, 1990·24 cites·16 claims
- 3668US7319475B2Method and apparatus for image forming capable of preventing image quality deterioration induced by heat from an optical deflectorRICOH KK·Filed 2004·Granted Jan 15, 2008·8 cites·73 claims
- 3766US10578496B2State detection sensorDENSO CORP·Filed 2015·Granted Mar 3, 2020·1 cites·10 claims
- 3866US10044914B2Imaging system, imaging device, information processing device, method, and programSONY CORP·Filed 2015·Granted Aug 7, 2018·1 cites·18 claims
- 3965US10404903B2Information processing apparatus, method, system and computer programSONY CORP·Filed 2015·Granted Sep 3, 2019·1 cites·21 claims
- 4065US8036585B2Lubricant supplying unit, process unit incorporating same, image forming apparatus incorporating same, and method of manufacturing sameRICOH CO LTD·Filed 2009·Granted Oct 11, 2011·2 cites·15 claims
- 4164US10306112B2Information processing device, information processing method, and programSONY CORP·Filed 2014·Granted May 28, 2019·0 cites·18 claims
- 4264US9326308B2Pairing method and terminal apparatusPANASONIC IP MAN CO LTD·Filed 2015·Granted Apr 26, 2016·1 cites·14 claims
- 4363US6752840B1Denim-like article of clothing and method of producing the sameTORAY INDUSTRIES·Filed 2000·Granted Jun 22, 2004·10 cites·20 claims
- 4463US2024282216A1In-vehicle system and function learning presentation methodDENSO CORP·Filed 2024·Application pending·0 cites
- 4562US2011004970A1Belly bandOKAMOTO KEIJI·Filed 2008·Application pending·0 cites
- 4661US6823227B2Method and device for executing work consisting of a plurality of steps under computer controlINCS INC·Filed 2002·Granted Nov 23, 2004·7 cites·4 claims
- 4761US2025001866A1Vehicle display systemDENSO CORP·Filed 2024·Application pending·0 cites
- 4859US10887502B2Information processing apparatus, information processing method, photographing system, and programSONY CORP·Filed 2018·Granted Jan 5, 2021·0 cites·19 claims
- 4958US11802809B2Backscattering optical amplification device, optical pulse testing device, backscattering optical amplification method and optical pulse testing methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Oct 31, 2023·0 cites·6 claims
- 5058US10530958B2Information processing device, information processing system, and method for controlling information processing deviceSONY CORP·Filed 2018·Granted Jan 7, 2020·0 cites·9 claims
Showing the top 50 of 114 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Keiji Okamoto files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →