Inventor · disambiguated record
Masaru Tanaka
Also filed as: MATSUMOTO YOSHIMITSU · TANAKA MASARU
127 granted patents·46 pending applications·2,875 citations·filing 1972–2024
99Inventor score
Top patents by PatentIndex Score
173 records- 0198US5109254ADeveloping apparatusRICOH KK·Filed 1990·Granted Apr 28, 1992·101 cites·22 claims
- 0297US6266501B1Image-forming apparatus having a seal for a developer and a method for detecting a removal of the sealRICOH KK·Filed 2000·Granted Jul 24, 2001·90 cites·44 claims
- 0396US6085062AElectrophotographic image forming apparatusRICOH KK·Filed 1999·Granted Jul 4, 2000·100 cites·6 claims
- 0496US5887224AImage forming device with improved mixing of circulated developer with replensihed tonerRICOH KK·Filed 1997·Granted Mar 23, 1999·97 cites·21 claims
- 0595US7147218B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2006·Granted Dec 12, 2006·20 cites·9 claims
- 0695US6628903B1Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paperRICOH KK·Filed 2000·Granted Sep 30, 2003·52 cites·3 claims
- 0795US6369495B2Organic electroluminescence display device and producing method thereofTDK CORP·Filed 2001·Granted Apr 9, 2002·98 cites·15 claims
- 0895US6144811AImage forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paperRICOH KK·Filed 1999·Granted Nov 7, 2000·70 cites·17 claims
- 0995US6055388AImage forming apparatus and method for obtaining appropriate toner densityRICOH KK·Filed 1998·Granted Apr 25, 2000·83 cites·26 claims
- 1095US6037712AOrganic electroluminescence display device and producing method thereofTDK CORP·Filed 1997·Granted Mar 14, 2000·292 cites·4 claims
- 1194US5532795AMethod of and system for cleaning roller membersRICOH KK·Filed 1994·Granted Jul 2, 1996·52 cites·54 claims
- 1293US7029006B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2003·Granted Apr 18, 2006·38 cites·7 claims
- 1393US6148161AImage forming apparatus with improved toner density controlRICOH KK·Filed 1999·Granted Nov 14, 2000·64 cites·25 claims
- 1493US6144822AImage forming apparatus having detachable transfer roller and discharge deviceRICOH KK·Filed 1999·Granted Nov 7, 2000·63 cites·22 claims
- 1593US6128449AImage forming apparatus and method for controlling charging and developing bias voltageRICOH KK·Filed 1998·Granted Oct 3, 2000·72 cites·12 claims
- 1693US6006050AImage forming method and apparatus for controlling amount of supplied toner or agitating timeRICOH KK·Filed 1997·Granted Dec 21, 1999·75 cites·24 claims
- 1792US4800411AMagnetic brush development device for electrostatic latent imagesRICOH KK·Filed 1987·Granted Jan 24, 1989·42 cites·7 claims
- 1891US6160969AImage forming apparatus with a voltage applying unit for image transferRICOH KK·Filed 1998·Granted Dec 12, 2000·57 cites·27 claims
- 1991US5915143AImage forming apparatus and method for automatically adjusting toner density in response to humidity variationsRICOH KK·Filed 1997·Granted Jun 22, 1999·55 cites·27 claims
- 2091US5240863AMethod of measuring immunoreactant using electrochemiluminescenceTDK CORP·Filed 1992·Granted Aug 31, 1993·103 cites·8 claims
- 2190US11808499B2Method for replacing refrigerant in refrigeration apparatus, refrigerating machine oil, and containerDAIKIN IND LTD·Filed 2022·Granted Nov 7, 2023·4 cites·9 claims
- 2290US7787364B2Control scheme for standby channel routeFUJITSU LTD·Filed 2007·Granted Aug 31, 2010·23 cites·9 claims
- 2390US5815767AImage forming apparatusRICOH KK·Filed 1997·Granted Sep 29, 1998·44 cites·30 claims
- 2489US5678125AImage forming apparatusRICOH KK·Filed 1996·Granted Oct 14, 1997·43 cites·28 claims
- 2589US5557172APlasma beam generating method and apparatus which can generate a high-power plasma beamSUMITOMO HEAVY INDUSTRIES·Filed 1994·Granted Sep 17, 1996·50 cites·13 claims
- 2688US5677597AElectron flow accelerating method and apparatus which can generate a high-power beamSUMITOMO HEAVY INDUSTRIES·Filed 1996·Granted Oct 14, 1997·48 cites·11 claims
- 2787US10941374B2Medical analysis device and cell analysis methodSUMITOMO RUBBER IND·Filed 2017·Granted Mar 9, 2021·3 cites·5 claims
- 2885US6898383B2Image forming apparatusRICOH KK·Filed 2003·Granted May 24, 2005·19 cites·20 claims
- 2984US7492162B2Inverter systemFUJITSU LTD·Filed 2006·Granted Feb 17, 2009·12 cites·10 claims
- 3083US6290563B1Organic electroluminescence display device and producing method thereofTDK CORP·Filed 2000·Granted Sep 18, 2001·26 cites·12 claims
- 3182US5151688AInput/output display panel with light penSHARP KK·Filed 1990·Granted Sep 29, 1992·100 cites·7 claims
- 3281US11920077B2Refrigeration cycle device for vehicleDAIKIN IND LTD·Filed 2019·Granted Mar 5, 2024·1 cites·12 claims
- 3381US9098032B2Image head apparatus including overheating preventing element configured to interrupt electrical power supply to heaterCANON KK·Filed 2013·Granted Aug 4, 2015·2 cites·13 claims
- 3481US4366798AFuel mixture heating device of an internal combustion engineTOYOTA MOTOR CO LTD·Filed 1980·Granted Jan 4, 1983·25 cites·5 claims
- 3580US10055844B2Disease diagnostic apparatus, image processing method in the same apparatus, and medium storing program associated with the same methodCASIO COMPUTER CO LTD·Filed 2017·Granted Aug 21, 2018·3 cites·10 claims
- 3680US9372136B2Agent for improving cancer cell adhesivenessKANBARA HISASHIGE·Filed 2012·Granted Jun 21, 2016·9 cites·16 claims
- 3780US7486082B2Anomaly detection in inverter systemFUJITSU LTD·Filed 2006·Granted Feb 3, 2009·9 cites·6 claims
- 3880US7177555B2Image forming process and image forming apparatusRICOH KK·Filed 2004·Granted Feb 13, 2007·18 cites·34 claims
- 3980US6160350AIon plating apparatusSUMITOMO HEAVY INDUSTRIES·Filed 1997·Granted Dec 12, 2000·37 cites·4 claims
- 4080US5920139AMagnet motor statorSANYO ELECTRIC CO·Filed 1997·Granted Jul 6, 1999·63 cites·21 claims
- 4180US4525069AOptical absorption analyzerHORIBA LTD·Filed 1982·Granted Jun 25, 1985·40 cites·6 claims
- 4278US10747168B2Control apparatus for driving a member into rotation and image forming apparatusCANON KK·Filed 2019·Granted Aug 18, 2020·1 cites·22 claims
- 4377US6590054B2Antithrombotic surface treating agent and medical apparatusTERUMO CORP·Filed 2001·Granted Jul 8, 2003·20 cites·5 claims
- 4477US5321483ACleaning device for image forming equipmentRICOH KK·Filed 1992·Granted Jun 14, 1994·23 cites·6 claims
- 4576US6618455B1Clock management method and transmission apparatus for synchronous network systemFUJITSU LTD·Filed 1999·Granted Sep 9, 2003·45 cites·6 claims
- 4676US4395994AFuel mixture heating device of an internal combustion engineTOYOTA MOTOR CO LTD·Filed 1980·Granted Aug 2, 1983·32 cites·10 claims
- 4775US9312163B2Impurity-doped layer formation apparatus and electrostatic chuck protection methodTANAKA MASARU·Filed 2012·Granted Apr 12, 2016·6 cites·9 claims
- 4875US8366833B2Plasma processing apparatus and plasma processing methodSUMITOMO HEAVY INDUSTRIES·Filed 2011·Granted Feb 5, 2013·3 cites·3 claims
- 4975US7169682B2Method for manufacturing semiconductor deviceSHARP KK·Filed 2005·Granted Jan 30, 2007·8 cites·17 claims
- 5074US7617720B2Surface position measuring method and surface position measuring deviceUNIV HOKKAIDO NAT UNIV CORP·Filed 2005·Granted Nov 17, 2009·6 cites·6 claims
Showing the top 50 of 173 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →