Inventor · disambiguated record
Koji Sakamoto
Also filed as: ASANO TAKESHI · IMAI CHIKARA · MIYAKAWA SEIICHI · SAKAMOTO KOJI
103 granted patents·27 pending applications·1,454 citations·filing 1976–2025
99Inventor score
Top patents by PatentIndex Score
130 records- 0197US4226525AElectrostatic copying machineRICOH KK·Filed 1977·Granted Oct 7, 1980·51 cites·8 claims
- 0297US4215930AMethod of maintaining the correct conditions of an electrophotographically duplicated imageRICOH KK·Filed 1978·Granted Aug 5, 1980·52 cites·8 claims
- 0396US11849329B2Vehicle authentication apparatusDENSO CORP·Filed 2020·Granted Dec 19, 2023·4 cites·8 claims
- 0496US4200391AElectrostatographic apparatus comprising document density sensing meansRICOH KK·Filed 1978·Granted Apr 29, 1980·49 cites·4 claims
- 0595US6122468AMethod and apparatus for forming toner imagesRICOH KK·Filed 1999·Granted Sep 19, 2000·82 cites·27 claims
- 0694US5606408AImage forming apparatus and cleaning device thereforRICOH KK·Filed 1995·Granted Feb 25, 1997·73 cites·35 claims
- 0794US5008711AImage forming apparatusRICOH KK·Filed 1988·Granted Apr 16, 1991·49 cites·9 claims
- 0894US4564285ADeveloping device having dispersed floating electrodes in a dielectric layerRICOH KK·Filed 1983·Granted Jan 14, 1986·48 cites·16 claims
- 0993US4862212AImage forming apparatusRICOH KK·Filed 1988·Granted Aug 29, 1989·50 cites·7 claims
- 1093US4406535ADevelopment apparatusRICOH KK·Filed 1981·Granted Sep 27, 1983·40 cites·20 claims
- 1193US4306804AExposure control and other component control for electrostatic copying machineRICOH KK·Filed 1979·Granted Dec 22, 1981·32 cites·4 claims
- 1292US5440373AColor image forming apparatusRICOH KK·Filed 1994·Granted Aug 8, 1995·51 cites·11 claims
- 1390US9239291B2DetectorPANASONIC CORP·Filed 2012·Granted Jan 19, 2016·8 cites·9 claims
- 1490US8339752B1Magnetic head with wide sensor back edge, low resistance, and high signal to-noise ratio and methods of production thereofHATTORI MASASHI·Filed 2011·Granted Dec 25, 2012·19 cites·25 claims
- 1590US4908661AHolder device for handling an image carrier of an image forming apparatusRICOH KK·Filed 1988·Granted Mar 13, 1990·34 cites·24 claims
- 1688US4862209AImage forming apparatus having a removable image forming process kitRICOH KK·Filed 1988·Granted Aug 29, 1989·31 cites·17 claims
- 1788US4195260AApparatus for sensing deterioration of developing substance including ferromagnetic carrier and non-magnetic toner particlesRICOH KK·Filed 1978·Granted Mar 25, 1980·25 cites·28 claims
- 1887US6623874B2Magnetic recording medium and magnetic recording apparatusHITACHI LTD·Filed 2001·Granted Sep 23, 2003·20 cites·10 claims
- 1987US5515145AColor image forming apparatus having integral multiple length beltRICOH KK·Filed 1993·Granted May 7, 1996·36 cites·8 claims
- 2086US6544667B1Magnetic recording medium, producing method of the same and magnetic recording systemHITACHI LTD·Filed 2000·Granted Apr 8, 2003·17 cites·17 claims
- 2186US4943828AReplacement of a cartridge usable with image forming equipmentRICOH KK·Filed 1989·Granted Jul 24, 1990·32 cites·7 claims
- 2285US4656964ADeveloping deviceRICOH KK·Filed 1983·Granted Apr 14, 1987·27 cites·15 claims
- 2385US4575220ADeveloping deviceRICOH KK·Filed 1983·Granted Mar 11, 1986·27 cites·7 claims
- 2485US4528937ADevice for forming a developer filmRICOH KK·Filed 1984·Granted Jul 16, 1985·26 cites·7 claims
- 2584US4624545ADeveloping device with regulated developer supplyRICOH KK·Filed 1983·Granted Nov 25, 1986·26 cites·5 claims
- 2682US4538898ADeveloping deviceRICOH KK·Filed 1982·Granted Sep 3, 1985·24 cites·23 claims
- 2781US4899689ADeveloping device with a developing roller and using a single-component developer and method for producing such developing rollerRICOH KK·Filed 1989·Granted Feb 13, 1990·23 cites·8 claims
- 2880US4561381AVoltage-controlled developing deviceRICOH KK·Filed 1983·Granted Dec 31, 1985·22 cites·9 claims
- 2980US4210864AApparatus for sensing toner density using a stationary ferromagnetic mass within the toner to increase sensitivityRICOH KK·Filed 1978·Granted Jul 1, 1980·18 cites·7 claims
- 3078US6627621B2Neutrophil function inhibitorsDAINICHISEIKA COLOR CHEM·Filed 2001·Granted Sep 30, 2003·12 cites·20 claims
- 3178US4445771ADeveloping apparatus for electrostatic photographyRICOH KK·Filed 1981·Granted May 1, 1984·19 cites·11 claims
- 3277US4625676ADeveloping deviceRICOH KK·Filed 1983·Granted Dec 2, 1986·15 cites·9 claims
- 3376US10857976B2Mobile device position estimation systemDENSO CORP·Filed 2019·Granted Dec 8, 2020·3 cites·6 claims
- 3476US8199002B2Wireless fire alarm systemSUZUKI JUNICHI·Filed 2008·Granted Jun 12, 2012·11 cites·19 claims
- 3576US8064159B2Current perpendicular to plane (CPP) magnetic read headSAKAMOTO KOJI·Filed 2009·Granted Nov 22, 2011·8 cites·16 claims
- 3676US4412736ACollection of suspended toner particlesRICOH KK·Filed 1981·Granted Nov 1, 1983·18 cites·13 claims
- 3775US9361050B2Management system and management methodCANON KK·Filed 2015·Granted Jun 7, 2016·2 cites·6 claims
- 3875US4576463ADeveloping apparatus for electrostatic photographyRICOH KK·Filed 1984·Granted Mar 18, 1986·17 cites·21 claims
- 3974US6342910B1Image forming apparatus to form smooth image with inconspicuous granularityRICOH KK·Filed 2000·Granted Jan 29, 2002·14 cites·27 claims
- 4073US10137858B2Vehicle-mounted deviceDENSO CORP·Filed 2015·Granted Nov 27, 2018·3 cites·6 claims
- 4173US4319832AToner separation and recovery apparatusRICOH KK·Filed 1980·Granted Mar 16, 1982·17 cites·14 claims
- 4272US8610586B2SensorSHIMADA YOSHITAKE·Filed 2009·Granted Dec 17, 2013·13 cites·27 claims
- 4372US8339753B1Magnetic bias structure for magnetoresistive sensorOKAWA NORIHIRO·Filed 2011·Granted Dec 25, 2012·3 cites·17 claims
- 4471US10078385B2Laminate manufacturing method, laminate manufacturing apparatus, laminate, and touch panel including laminateSAKAMOTO JUN·Filed 2014·Granted Sep 18, 2018·0 cites·10 claims
- 4571US4896625ADeveloping deviceRICOH KK·Filed 1988·Granted Jan 30, 1990·13 cites·10 claims
- 4671US4674439ADeveloping deviceRICOH KK·Filed 1986·Granted Jun 23, 1987·13 cites·7 claims
- 4770US8351163B2Tunneling magnetoresistance read head having a cofe interface layer and methods for producing the sameHITACHI GLOBAL STORAGE TECH NL·Filed 2010·Granted Jan 8, 2013·2 cites·14 claims
- 4870US6737977B2Fire detector unitMATSUSHITA ELECTRIC WORKS LTD·Filed 2002·Granted May 18, 2004·25 cites·6 claims
- 4970US4166865AMacrotetrolide animal growth promotorCHUGAI PHARMACEUTICAL CO LTD·Filed 1978·Granted Sep 4, 1979·10 cites·10 claims
- 5069US6611611B2Particle sensorMATSUSHITA ELECTRIC WORKS LTD·Filed 2001·Granted Aug 26, 2003·9 cites·11 claims
Showing the top 50 of 130 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →