Inventor · disambiguated record
Yoshiaki Takahashi
Also filed as: TAKAHASHI YOSHIAKI
93 granted patents·29 pending applications·2,131 citations·filing 1982–2025
99Inventor score
Files withHITACHI LTD21SHOWA DENKO KK10XEROX INTERNAT PARTNERS9IDEMITSU KOSAN CO8ISHIKAWAJIMA HARIMA HEAVY IND8
Top patents by PatentIndex Score
122 records- 0198US7630807B2Vehicle control systemHITACHI LTD·Filed 2005·Granted Dec 8, 2009·112 cites·43 claims
- 0298US7396598B2Light emitting material and organic light-emitting deviceSHOWA DENKO KK·Filed 2002·Granted Jul 8, 2008·884 cites·19 claims
- 0397US8645022B2Vehicle control systemYOSHIMURA KENTARO·Filed 2009·Granted Feb 4, 2014·56 cites·12 claims
- 0495US7763365B2Light emitting material and organic light-emitting deviceSHOWA DENKO KK·Filed 2008·Granted Jul 27, 2010·19 cites·8 claims
- 0593US7071698B2Power supply apparatus for detecting battery voltage and the portions of faultsSANYO ELECTRIC CO·Filed 2005·Granted Jul 4, 2006·32 cites·7 claims
- 0692US7240752B2Vehicular electrical equipment unit heating and cooling system and hybrid vehicleHONDA MOTOR CO LTD·Filed 2004·Granted Jul 10, 2007·60 cites·12 claims
- 0792US5575232AMethod and device for reducing friction on a navigating vehicleKATO HIROHARU·Filed 1994·Granted Nov 19, 1996·49 cites·13 claims
- 0890US9650038B2Vehicle control systemHITACHI LTD·Filed 2014·Granted May 16, 2017·11 cites·12 claims
- 0990US7570321B2Liquid crystal display device and backlightHITACHI DISPLAYS LTD·Filed 2006·Granted Aug 4, 2009·16 cites·16 claims
- 1090US6789491B2Friction reducing ship and method for reducing frictional resistanceISHIKAWAJIMA HARIMA HEAVY IND·Filed 2001·Granted Sep 14, 2004·33 cites·9 claims
- 1190US5424683ADifferential amplification circuit wherein a DC level at an output terminal is automatically adjusted and a power amplifier wherein a BTL drive circuit is driven by a half waveSANYO ELECTRIC CO·Filed 1994·Granted Jun 13, 1995·52 cites·8 claims
- 1286US12492162B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2024·Granted Dec 9, 2025·0 cites·19 claims
- 1386US7729827B2Vehicle control systemHITACHI LTD·Filed 2006·Granted Jun 1, 2010·17 cites·7 claims
- 1486US6186085B1Method for reducing frictional resistance of hull, frictional resistance reducing ship using such method, and method for analyzing ejected air-bubbles from shipKATO HIROHARU·Filed 1996·Granted Feb 13, 2001·42 cites·14 claims
- 1584US8684118B2Cooling structure for electricity storage deviceKOSAKA KEISHI·Filed 2010·Granted Apr 1, 2014·10 cites·6 claims
- 1683US7808576B2Liquid crystal display deviceHITACHI DISPLAYS LTD·Filed 2007·Granted Oct 5, 2010·15 cites·8 claims
- 1782US6145459AFriction-reducing ship and method for reducing skin frictionISHIKAWAJIMA HARIMA HEAVY IND·Filed 1998·Granted Nov 14, 2000·61 cites·3 claims
- 1879USD309130SCentral processor for an electronic computerHITACHI LTD·Filed 1988·Granted Jul 10, 1990·20 cites·1 claims
- 1978US8165745B2Vehicle control systemSAKURAI KOHEI·Filed 2010·Granted Apr 24, 2012·6 cites·9 claims
- 2078US5015910AElectron gun for color picture tubeHITACHI LTD·Filed 1989·Granted May 14, 1991·24 cites·12 claims
- 2177US8066393B2Liquid crystal display deviceTAKAHASHI YOSHIAKI·Filed 2008·Granted Nov 29, 2011·8 cites·9 claims
- 2277US7736757B2Light emitting material and organic light-emitting deviceSHOWA DENKO KK·Filed 2008·Granted Jun 15, 2010·3 cites·8 claims
- 2377US6017067ALatch device for a tailgate of a vehicleMITSUI MINING & SMELTING CO·Filed 1997·Granted Jan 25, 2000·73 cites·7 claims
- 2477US4851741AElectron gun for color picture tubeHITACHI LTD·Filed 1988·Granted Jul 25, 1989·22 cites·11 claims
- 2576US12022728B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Granted Jun 25, 2024·0 cites·15 claims
- 2676US7872411B2Organic electroluminescence device using a copolymer and a phosphorescent compoundSHOWA DENKO KK·Filed 2006·Granted Jan 18, 2011·6 cites·3 claims
- 2776US6748891B2Frictional resistance reducing method, and ship with reduced frictional resistanceISHIKAWAJIMA HARIMA HEAVY IND·Filed 2000·Granted Jun 15, 2004·16 cites·7 claims
- 2876US4859560AToner for use in electrophotographySHARP KK·Filed 1987·Granted Aug 22, 1989·22 cites·8 claims
- 2973US12463566B2Electric machine systemIHI CORP·Filed 2024·Granted Nov 4, 2025·0 cites·20 claims
- 3072US7677191B2Frictional resistance reduction ship and operation methodTAKAHASHI YOSHIAKI·Filed 2009·Granted Mar 16, 2010·6 cites·10 claims
- 3172US6304289B1Submerged laser television and submerged laser visual recognizerST DIRECTOR GENERAL OF THE 1·Filed 1997·Granted Oct 16, 2001·58 cites·20 claims
- 3272US2025293189A1Semiconductor memory deviceKIOXIA CORP·Filed 2025·Application pending·0 cites
- 3371US7654212B2Frictional resistance reduction shipTAKAHASHI YOSHIAKI·Filed 2009·Granted Feb 2, 2010·7 cites·4 claims
- 3471US4825120AElectron gun apparatus with auxiliary electrodes for a color cathode-ray tubeHITACHI LTD·Filed 1987·Granted Apr 25, 1989·16 cites·7 claims
- 3571US4621920APreconditioning a photosensitive drum prior to actual photocopyingFUJI XEROX CO LTD·Filed 1982·Granted Nov 11, 1986·15 cites·4 claims
- 3669US5861693APower-generating electric motorFiled 1995·Granted Jan 19, 1999·32 cites·14 claims
- 3768US8025987B2Light emitting polymer material, organic electroluminescence device and display device comprising light emitting polymer materialSHOWA DENKO KK·Filed 2006·Granted Sep 27, 2011·2 cites·6 claims
- 3867US7635527B2Light emitting material and organic light-emitting deviceSHOWA DENKO KK·Filed 2008·Granted Dec 22, 2009·1 cites·6 claims
- 3967US5539278AColor cathode ray tubeHITACHI LTD·Filed 1994·Granted Jul 23, 1996·19 cites·8 claims
- 4066US8441003B2Phosphorescent polymer compound based on iridium polymer complex and organic electroluminescent device utilizing the sameTAKAHASHI YOSHIAKI·Filed 2008·Granted May 14, 2013·2 cites·5 claims
- 4165US12362303B2Semiconductor memory deviceKIOXIA CORP·Filed 2022·Granted Jul 15, 2025·0 cites·20 claims
- 4264US11552251B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2017·Granted Jan 10, 2023·0 cites·10 claims
- 4364US6664462B2Metal complex having β-diketonate, process for production thereof, photoelectric conversion element, and photochemical cellNAT INST OF ADVANCED IND SCIEN·Filed 2000·Granted Dec 16, 2003·11 cites·12 claims
- 4464US4642760AStatus-change data gathering apparatusHITACHI LTD·Filed 1983·Granted Feb 10, 1987·29 cites·2 claims
- 4563US4833365AElectron gun structure for converging electron beamsHITACHI LTD·Filed 1987·Granted May 23, 1989·12 cites·15 claims
- 4662US8913272B2Virtual printer interface nodeXEROX INTERNAT PARTNERS·Filed 2013·Granted Dec 16, 2014·1 cites·27 claims
- 4762US8426038B2Phosphorescent polymer compound and organic electroluminescence device using the sameTAKAHASHI YOSHIAKI·Filed 2008·Granted Apr 23, 2013·1 cites·8 claims
- 4862US7855765B2Liquid crystal display deviceHITACHI DISPLAYS LTD·Filed 2008·Granted Dec 21, 2010·3 cites·12 claims
- 4962US5343009AData processing device and plug-in packageHITACHI LTD·Filed 1991·Granted Aug 30, 1994·14 cites·4 claims
- 5062US2024302822A1Systems and methods for manufacturing energy consumption and carbon footprint attributionDEVICES UNLIMITED CORP·Filed 2023·Application pending·0 cites
Showing the top 50 of 122 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Yoshiaki Takahashi 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 →