Inventor · disambiguated record
Takeshi Hirai
Also filed as: HIRAI TAKESHI
21 granted patents·11 pending applications·17 citations·filing 1981–2024
90Inventor score
Top patents by PatentIndex Score
32 records- 0195US11898018B2Liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cellAGC INC·Filed 2021·Granted Feb 13, 2024·2 cites·18 claims
- 0294US11840589B2Perfluoropolymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte water electrolyzerAGC INC·Filed 2021·Granted Dec 12, 2023·2 cites·11 claims
- 0391US11414502B2Fluorosulfonyl group or sulfonic acid group-containing polymer, its production method and its applicationAGC INC·Filed 2020·Granted Aug 16, 2022·2 cites·29 claims
- 0485US11242420B2Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methodsAGC INC·Filed 2020·Granted Feb 8, 2022·1 cites·10 claims
- 0581US2023307680A1Electrolyte material, its production method and its useAGC INC·Filed 2023·Application pending·0 cites
- 0678US12187821B2Fluorosulfonyl group-containing compound, fluorosulfonyl group-containing monomer, and their production methodsAGC INC·Filed 2021·Granted Jan 7, 2025·0 cites·4 claims
- 0773US11996595B2Polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cellAGC INC·Filed 2021·Granted May 28, 2024·0 cites·20 claims
- 0872US12276035B2Polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte water electrolyzerAGC INC·Filed 2021·Granted Apr 15, 2025·0 cites·9 claims
- 0970US12162966B2Sulfonic acid group-containing polymer, fluorosulfonyl group-containing polymer, and liquid compositionAGC INC·Filed 2021·Granted Dec 10, 2024·0 cites·15 claims
- 1070US2024141079A1Method for producing perfluorinated compound, and method for producing fluorinated polymerAGC INC·Filed 2023·Application pending·0 cites
- 1169US12098226B2Polymer, method for producing polymer, and method for producing membraneAGC INC·Filed 2021·Granted Sep 24, 2024·0 cites·22 claims
- 1268US12398228B2Method for producing fluorosulfonyl group-containing fluorinated polymer, method for producing salt-type sulfonic acid group- containing fluorinated polymer and method for producing acid-type sulfonic acid group-containing fluorinated polymerAGC INC·Filed 2021·Granted Aug 26, 2025·0 cites·7 claims
- 1367US2019131646A1Electrolyte material, its production method and its useAGC INC·Filed 2018·Application pending·0 cites
- 1465US12503583B2Perfluoropolymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cellAGC INC·Filed 2021·Granted Dec 23, 2025·0 cites·13 claims
- 1565US2024291009A1Method for purifying treatment target solutionAGC INC·Filed 2024·Application pending·0 cites
- 1664US12018106B2Fluorosulfonyl group-containing fluoropolymer and method for producing same, sulfonic acid group-containing fluoropolymer and method for producing same, solid polymer electrolyte membrane, membrane electrode assembly, and solid polymer fuel cellAGC INC·Filed 2022·Granted Jun 25, 2024·0 cites·19 claims
- 1762US11851508B2Acid-type sulfonic acid group-containing polymer, liquid composition, polymer electrolyte membrane, membrane electrode assembly, polymer electrolyte fuel cell and ion exchange membrane for water electrolysisAGC INC·Filed 2021·Granted Dec 26, 2023·0 cites·20 claims
- 1861US12313960B2Mounting member and projection optical apparatusSEIKO EPSON CORP·Filed 2021·Granted May 27, 2025·0 cites·11 claims
- 1957US8003206B2Optical laminateDAINIPPON PRINTING CO LTD·Filed 2005·Granted Aug 23, 2011·2 cites·9 claims
- 2056US2024114618A1Circuit board unit and electronic apparatusSEIKO EPSON CORP·Filed 2023·Application pending·0 cites
- 2155US2007262986A1Image generating device and image generating methodSEGA ENTERPRISES KK·Filed 2007·Application pending·0 cites
- 2252US9636575B2Mobile terminal, control method for mobile terminal, and programNEILO INC·Filed 2014·Granted May 2, 2017·0 cites·10 claims
- 2344US7569277B2Optical laminateDAINIPPON PRINTING CO LTD·Filed 2005·Granted Aug 4, 2009·0 cites·10 claims
- 2443US2017151499A1Mobile terminal, and a control method for a mobile terminalNEILO INC·Filed 2017·Application pending·0 cites
- 2542US2017098846A1Electrolyte material, liquid composition, membrane electrode assembly for polymer electrolyte fuel cell and fluorinated branched polymerASAHI GLASS CO LTD·Filed 2016·Application pending·0 cites
- 2638USD815182SLens cover for a projectorSEIKO EPSON CORP·Filed 2016·Granted Apr 10, 2018·2 cites·1 claims
- 2738US2013053459A1Ionic polymer and process for its productionTAYANAGI JUNICHI·Filed 2012·Application pending·0 cites
- 2838US2009011229A1Optical multilayer bodyDAINIPPON PRINTING CO LTD·Filed 2006·Application pending·0 cites
- 2937US10022716B2Method for producing ionic polymer membraneASAHI GLASS CO LTD·Filed 2015·Granted Jul 17, 2018·0 cites·9 claims
- 3036US2002027412A1Fluoride-based fluorescent material and fluorescent lamp using sameNEC CORP·Filed 2001·Application pending·0 cites
- 3130US4406399AMethod of controlling an enamelling ovenSHOWA ELECTRIC WIRE & CABLE CO·Filed 1981·Granted Sep 27, 1983·3 cites·15 claims
- 3227US7479958B1Image generating device and image generating methodSEGA ENTERPRISES KK·Filed 1999·Granted Jan 20, 2009·3 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →