Inventor · disambiguated record
Takeshi Yamakawa
Also filed as: YAMAKAWA TAKESHI
77 granted patents·6 pending applications·1,178 citations·filing 1985–2024
99Inventor score
Files withRICOH KK17OMRON TATEISI ELECTRONICS CO14TOTO LTD8TOYOTA ENG & MFG NORTH AMERICA6YAMAKAWA TAKESHI5
Top patents by PatentIndex Score
83 records- 0198US5019867AImage forming apparatus having a removable processing unitRICOH KK·Filed 1989·Granted May 28, 1991·93 cites·9 claims
- 0295US11214950B2Sanitary washing deviceTOTO LTD·Filed 2020·Granted Jan 4, 2022·6 cites·16 claims
- 0395US5506795AApparatus and method for generating chaotic signals and chaos deviceFiled 1993·Granted Apr 9, 1996·156 cites·10 claims
- 0492US11220812B2Sanitary washing deviceTOTO LTD·Filed 2020·Granted Jan 11, 2022·3 cites·17 claims
- 0592US11214951B2Sanitary washing deviceTOTO LTD·Filed 2020·Granted Jan 4, 2022·3 cites·18 claims
- 0692US4837725AFuzzy membership function circuitOMRON TATEISI ELECTRONICS CO·Filed 1986·Granted Jun 6, 1989·64 cites·18 claims
- 0791US10998638B2Nickel-chromium particles and multilayer structures comprising nickel chromium core layersTOYOTA ENG & MFG NORTH AMERICA·Filed 2019·Granted May 4, 2021·2 cites·4 claims
- 0891US5017817ABasic circuitry particularly for construction of multivalued logic systemsOMRON TATEISI ELECTRONICS CO·Filed 1989·Granted May 21, 1991·44 cites·2 claims
- 0990US11749899B2Multilayer structures comprising reflective core layersTOYOTA ENG & MFG NORTH AMERICA·Filed 2021·Granted Sep 5, 2023·2 cites·20 claims
- 1090US7872664B2Optical scanning device including shutter member that closes or opens an emission window and image forming apparatus including the optical scanning deviceRICOH CO LTD·Filed 2006·Granted Jan 18, 2011·15 cites·20 claims
- 1189US11591784B2Sanitary washing deviceTOTO LTD·Filed 2020·Granted Feb 28, 2023·3 cites·15 claims
- 1289US4875184AFuzzy logic computers and circuitsOMRON TATEISI ELECTRONICS CO·Filed 1987·Granted Oct 17, 1989·62 cites·8 claims
- 1388US11339495B2Coated discrete metallic particles and multilayer structures comprising reflective core layersTOYOTA ENG & MFG NORTH AMERICA·Filed 2020·Granted May 24, 2022·2 cites·20 claims
- 1487US10998639B2Discrete metallic particles and multilayer structures comprising reflective core layersTOYOTA ENG & MFG NORTH AMERICA·Filed 2020·Granted May 4, 2021·2 cites·4 claims
- 1584US7474451B2Optical scanning device, image forming apparatus, and method of reducing noises in optical scanning deviceRICOH KK·Filed 2006·Granted Jan 6, 2009·14 cites·23 claims
- 1683US8339435B2Image forming apparatus and optical scanning unitYAMAKAWA TAKESHI·Filed 2006·Granted Dec 25, 2012·6 cites·19 claims
- 1782US11747610B2Optical scanning device and image forming apparatusRICOH CO LTD·Filed 2021·Granted Sep 5, 2023·1 cites·7 claims
- 1881US11173922B2Vehicle control device and vehicle control systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2018·Granted Nov 16, 2021·4 cites·15 claims
- 1981US6243128B1Image forming apparatus in which adjustment for forming image in rectangular form is easily done and method for making the same apparatusRICOH KK·Filed 1999·Granted Jun 5, 2001·30 cites·16 claims
- 2080US10508849B2Air conditioner with outdoor temperature sensing correlated to outdoor fan controlDAIKIN IND LTD·Filed 2018·Granted Dec 17, 2019·2 cites·6 claims
- 2180US9519259B2Housing structure, optical scanning device, and image forming apparatusYOSHIDA DAISUKE·Filed 2016·Granted Dec 13, 2016·3 cites·13 claims
- 2280US7760225B2Image forming apparatus, optical writing device, and housing molding method providing simple structureRICOH KK·Filed 2006·Granted Jul 20, 2010·6 cites·17 claims
- 2380US4694418AFuzzy logic basic circuit and fuzzy logic integrated circuit operable in current modeOMRON TATEISI ELECTRONICS CO·Filed 1985·Granted Sep 15, 1987·36 cites·6 claims
- 2480US2025011965A1Coated discrete metallic particles and multilayer structures comprising reflective core layersTOYOTA ENG & MFG NORTH AMERICA·Filed 2024·Application pending·0 cites
- 2579US8780159B2Optical scanner and image forming apparatus including sameSERIZAWA KEIICHI·Filed 2013·Granted Jul 15, 2014·2 cites·20 claims
- 2679US6829001B2Image forming apparatusRICOH KK·Filed 2003·Granted Dec 7, 2004·20 cites·14 claims
- 2779US4716540AMulti-functional fuzzy logic circuitOMRON TATEISI ELECTRONICS CO·Filed 1985·Granted Dec 29, 1987·35 cites·7 claims
- 2878US11668084B2Sanitary washing deviceTOTO LTD·Filed 2020·Granted Jun 6, 2023·1 cites·10 claims
- 2978US8864972B2Dielectrophoresis apparatus and methodYAMAKAWA TAKESHI·Filed 2008·Granted Oct 21, 2014·13 cites·15 claims
- 3078US5610651AImage forming apparatus with frequency correctorRICOH KK·Filed 1994·Granted Mar 11, 1997·44 cites·22 claims
- 3177US8471883B2Optical scanner and image forming apparatus including sameSERIZAWA KEIICHI·Filed 2009·Granted Jun 25, 2013·4 cites·20 claims
- 3275US7869101B2Image processing apparatus having enhanced controlling process for optical scanning unitRICOH CO LTD·Filed 2006·Granted Jan 11, 2011·4 cites·19 claims
- 3374US11332626B2Paint, method for producing paint, coated component and method for producing coated componentTOYOTA MOTOR CO LTD·Filed 2019·Granted May 17, 2022·0 cites·7 claims
- 3474US9096997B2Sanitary washing apparatusMOCHITA MASAYUKI·Filed 2011·Granted Aug 4, 2015·5 cites·23 claims
- 3574US5167005AFuzzy computerJAPAN RES DEV CORP·Filed 1989·Granted Nov 24, 1992·29 cites·5 claims
- 3673US11330704B2Electronic control deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2018·Granted May 10, 2022·2 cites·12 claims
- 3773US8368986B2Optical scanning device and image forming apparatusRICOH CO LTD·Filed 2011·Granted Feb 5, 2013·3 cites·10 claims
- 3872US12116685B2Coated discrete metallic particles and multilayer structures comprising reflective core layersTOYOTA ENG & MFG NORTH AMERICA·Filed 2022·Granted Oct 15, 2024·0 cites·18 claims
- 3972US7667726B2Optical writing unit and an image forming apparatus including the sameRICOH KK·Filed 2006·Granted Feb 23, 2010·3 cites·9 claims
- 4069US5803622AImage forming device having convenient access to serviceable componentsRICOH KK·Filed 1995·Granted Sep 8, 1998·26 cites·31 claims
- 4168US9030519B2Optical writing device and image forming apparatusNARITA SUSUMU·Filed 2014·Granted May 12, 2015·1 cites·7 claims
- 4267US4996561AImage forming apparatus with a document image edition functionRICOH KK·Filed 1989·Granted Feb 26, 1991·14 cites·4 claims
- 4367US4814644ABasic circuitry particularly for construction of multivalued logic systemsOMRON TATEISI ELECTRONICS CO·Filed 1986·Granted Mar 21, 1989·30 cites·17 claims
- 4466US7414239B2Optical-scanning apparatus and image forming apparatusRICOH KK·Filed 2007·Granted Aug 19, 2008·2 cites·20 claims
- 4565US6236418B1Image forming apparatus and method to correct magnification error caused by optical characteristics of image writing deviceRICOH KK·Filed 1999·Granted May 22, 2001·30 cites·33 claims
- 4664US4860243AFuzzy logic semifinished integrated circuitOMRON TATEISI ELECTRONICS CO·Filed 1987·Granted Aug 22, 1989·20 cites·9 claims
- 4762US6985312B2Lens mounting deviceRICOH KK·Filed 2004·Granted Jan 10, 2006·9 cites·17 claims
- 4862US5189728ARule generating and verifying apparatus for fuzzy controlOMRON TATEISI ELECTRONICS CO·Filed 1991·Granted Feb 23, 1993·22 cites·10 claims
- 4961US10724221B2Sanitary washing deviceTOTO LTD·Filed 2017·Granted Jul 28, 2020·1 cites·5 claims
- 5059US12088765B2Casing structure, optical scanner, and image forming apparatusSAKAUE YOSHINOBU·Filed 2023·Granted Sep 10, 2024·0 cites·11 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →