Inventor · disambiguated record
Takayuki Hirao
Also filed as: HIRAO TAKAYUKI
35 granted patents·9 pending applications·117 citations·filing 2002–2022
96Inventor score
Top patents by PatentIndex Score
44 records- 0193US9045844B2Method for peeling group 13 element nitride filmNGK INSULATORS LTD·Filed 2014·Granted Jun 2, 2015·5 cites·8 claims
- 0292US6743508B2Fep pelletDAIKIN AMERICA INC·Filed 2002·Granted Jun 1, 2004·35 cites·11 claims
- 0391US8795431B2Method for producing gallium nitride layer and seed crystal substrate used in sameNGK INSULATORS LTD·Filed 2013·Granted Aug 5, 2014·7 cites·12 claims
- 0489US11309455B2Group 13 element nitride layer, free-standing substrate and functional elementNGK INSULATORS LTD·Filed 2020·Granted Apr 19, 2022·2 cites·14 claims
- 0587US7923519B2FEP pelletDAIKIN IND LTD·Filed 2007·Granted Apr 12, 2011·13 cites·6 claims
- 0683US11088299B2Group 13 element nitride layer, free-standing substrate and functional elementNGK INSULATORS LTD·Filed 2020·Granted Aug 10, 2021·1 cites·27 claims
- 0783US11011678B2Group 13 element nitride layer, free-standing substrate and functional elementNGK INSULATORS LTD·Filed 2020·Granted May 18, 2021·1 cites·15 claims
- 0882US10756354B2Membrane catalyst layer assembly production method and membrane catalyst layer assembly production deviceNISSAN MOTOR·Filed 2015·Granted Aug 25, 2020·2 cites·18 claims
- 0982US9868877B2Composition and method for producing the same, and powder coating material, pellet, resin formed article, and electric wireNAKATANI YASUKAZU·Filed 2010·Granted Jan 16, 2018·4 cites·14 claims
- 1082US6703464B2Flourine-containing copolymerDAIKIN AMERICA INC·Filed 2002·Granted Mar 9, 2004·18 cites·9 claims
- 1180US10041186B2Method for producing nitride crystalNGK INSULATORS LTD·Filed 2016·Granted Aug 7, 2018·1 cites·6 claims
- 1278US11611017B2Group 13 element nitride layer, free-standing substrate and functional elementNGK INSULATORS LTD·Filed 2020·Granted Mar 21, 2023·1 cites·14 claims
- 1376US9041004B2Films of nitrides of group 13 elements and layered body including the sameNGK INSULATORS LTD·Filed 2014·Granted May 26, 2015·3 cites·9 claims
- 1475US7105619B2Fluorine-containing copolymerDAIKIN IND LTD·Filed 2003·Granted Sep 12, 2006·11 cites·9 claims
- 1572US7981572B2Fuel cell and production of fuel cell stackNISSAN MOTOR·Filed 2004·Granted Jul 19, 2011·10 cites·9 claims
- 1667US9080035B2Aqueous fluoropolymer dispersionTANIMOTO KENJIRO·Filed 2012·Granted Jul 14, 2015·1 cites·14 claims
- 1766US2011014478A1Molded body for biodiesel fuelSAGISAKA SHIGEHITO·Filed 2009·Application pending·0 cites
- 1862US9074033B2Ethylene/tetrafluoroethylene copolymer, electrical wire, and fluorine resin powder for rotational moldingHIRAO TAKAYUKI·Filed 2010·Granted Jul 7, 2015·1 cites·8 claims
- 1961US2013066010A1Molded body for biodiesel fuelDAIKIN IND LTD·Filed 2012·Application pending·0 cites
- 2059US11555257B2Group 13 element nitride layer, free-standing substrate and functional elementNGK INSULATORS LTD·Filed 2020·Granted Jan 17, 2023·0 cites·15 claims
- 2159US10804432B2Free-standing substrate comprising polycrystalline group 13 element nitride and light-emitting element using sameNGK INSULATORS LTD·Filed 2018·Granted Oct 13, 2020·0 cites·13 claims
- 2257US10734548B2Free-standing substrate comprising polycrystalline group 13 element nitride and light-emitting element using sameNGK INSULATORS LTD·Filed 2018·Granted Aug 4, 2020·0 cites·13 claims
- 2356US8334351B2FEP pelletKONO HIDEKI·Filed 2011·Granted Dec 18, 2012·0 cites·1 claims
- 2456US2023215969A9Method for producing group 13 element nitride crystal layer, and seed crystal substrateNGK INSULATORS LTD·Filed 2022·Application pending·0 cites
- 2555US12392053B2Group 13 element nitride crystal layer, self-supporting substrate, and functional elementNGK INSULATORS LTD·Filed 2022·Granted Aug 19, 2025·0 cites·14 claims
- 2655US10156022B2Method for producing nitride of group-13 element, and melt compositionNGK INSULATORS LTD·Filed 2016·Granted Dec 18, 2018·0 cites·5 claims
- 2755US8247137B2Fuel cell and production of fuel cell stackFUJIKI AKIRA·Filed 2011·Granted Aug 21, 2012·1 cites·9 claims
- 2855US2014158978A1Semiconductor Light-Emitting Element and Laminate Containing SameNGK INSULATORS LTD·Filed 2014·Application pending·0 cites
- 2953US2014026809A1Process for Producing Group 13 Metal Nitride, and Seed Crystal Substrate for Use in SameNGK INSULATORS LTD·Filed 2013·Application pending·0 cites
- 3052US8729672B2Method for growing group 13 nitride crystal and group 13 nitride crystalNGK INSULATORS LTD·Filed 2013·Granted May 20, 2014·0 cites·1 claims
- 3151US9793553B2Method and apparatus for manufacturing separator for fuel cellNISSAN MOTOR·Filed 2014·Granted Oct 17, 2017·0 cites·11 claims
- 3250US10947638B2Underlying substrate including a seed crystal layer of a group 13 nitride having stripe-shaped projections and recesses and an off-angle in a direction of an a-axisNGK INSULATORS LTD·Filed 2018·Granted Mar 16, 2021·0 cites·5 claims
- 3350US7988784B2Method for manufacturing III metal nitride single crystalNGK INSULATORS LTD·Filed 2010·Granted Aug 2, 2011·0 cites·2 claims
- 3449US11035055B2Group 13 nitride layer, composite substrate, and functional elementNGK INSULATORS LTD·Filed 2019·Granted Jun 15, 2021·0 cites·8 claims
- 3549US10190233B2Method and device for producing a group 13 element nitride crystal using a shielding objectNGK INSULATORS LTD·Filed 2017·Granted Jan 29, 2019·0 cites·11 claims
- 3648US9677192B2Group 3B nitride crystal substrateSHIMODAIRA TAKANAO·Filed 2011·Granted Jun 13, 2017·0 cites·3 claims
- 3745US2007154628A1Solid polymer membrane fuel-cell manufacturing methodNISSAN MOTOR·Filed 2004·Application pending·0 cites
- 3843US10553876B2Method and device for modifying catalyst layerNISSAN MOTOR·Filed 2015·Granted Feb 4, 2020·0 cites·11 claims
- 3943US8440017B2Method for growing group 13 nitride crystal and group 13 nitride crystalSHIMODAIRA TAKANAO·Filed 2011·Granted May 14, 2013·0 cites·6 claims
- 4043US2011287222A1Group 3B nitride crystalHIRAO TAKAYUKI·Filed 2011·Application pending·0 cites
- 4140US11233245B2Catalyst-layer forming apparatusTOKYO OHKA KOGYO CO LTD·Filed 2016·Granted Jan 25, 2022·0 cites·2 claims
- 4240US2005118431A1Fep pelletDAIKIN IND LTD UMEDA CT BUILDI·Filed 2003·Application pending·0 cites
- 4337US9290861B2Group 13 nitride crystal with stepped surfaceHIRAO TAKAYUKI·Filed 2010·Granted Mar 22, 2016·0 cites·4 claims
- 4429US2003033901A1Cam lobe piece of built-up type camshaftNISSAN MOTOR·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →