Inventor · disambiguated record
Koji Akioka
Also filed as: AKIOKA KOJI
46 granted patents·8 pending applications·486 citations·filing 1988–2024
98Inventor score
Files withSEIKO EPSON CORP39NIPPON STEEL & SUMITOMO METAL CORP7NIPPON STEEL CORP6SUMITOMO METAL IND1TESHIMA TAKASHI1
Top patents by PatentIndex Score
54 records- 0193US10549506B2Hot-dip zinc-based plated steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Feb 4, 2020·7 cites·13 claims
- 0293US7514145B2Method and apparatus for producing resin particles using granulation-prevention agent, and resin particles produced by the methodSEIKO EPSON CORP·Filed 2005·Granted Apr 7, 2009·13 cites·18 claims
- 0391US7595140B2Liquid developer and image forming apparatusSEIKO EPSON CORP·Filed 2007·Granted Sep 29, 2009·12 cites·12 claims
- 0487US6527971B1Rare-earth bonded magnet, rare-earth bonded magnet composition, and method of manufacturing the rare-earth bonded magnetSEIKO EPSON CORP·Filed 2001·Granted Mar 4, 2003·29 cites·14 claims
- 0586US12459034B2Method for manufacturing riveted joint, riveted joint, and vehicle componentNIPPON STEEL CORP·Filed 2022·Granted Nov 4, 2025·1 cites·18 claims
- 0686US7608376B2Method of manufacturing liquid developer, liquid developer, and image forming apparatusSEIKO EPSON CORP·Filed 2007·Granted Oct 27, 2009·8 cites·14 claims
- 0786US6464940B1pH sensor and pH measurement method employing the sameSUMITOMO METAL IND·Filed 2000·Granted Oct 15, 2002·27 cites·4 claims
- 0885US2024426018A1Titanium material and coated titanium materialNIPPON STEEL CORP·Filed 2024·Application pending·0 cites
- 0984US5597425ARare earth cast alloy permanent magnets and methods of preparationSEIKO EPSON CORP·Filed 1995·Granted Jan 28, 1997·28 cites·13 claims
- 1082US5062095AActuator and method of manufacturing thereofSEIKO EPSON CORP·Filed 1989·Granted Oct 29, 1991·45 cites·24 claims
- 1181US6500374B1Method of manufacturing bonded magnets of rare earth metal, and bonded magnet of rare earth metalSEIKO EPSON CORP·Filed 1997·Granted Dec 31, 2002·43 cites·32 claims
- 1279US7723005B2Liquid developerSEIKO EPSON CORP·Filed 2006·Granted May 25, 2010·5 cites·9 claims
- 1376US7563550B2Liquid developer and image forming apparatusSEIKO EPSON CORP·Filed 2006·Granted Jul 21, 2009·4 cites·19 claims
- 1476US5888416ARare-earth bonded magnet composition, rare-earth bonded magnet and process for producing said rare-earth bonded magnetSEIKO EPSON CORP·Filed 1993·Granted Mar 30, 1999·35 cites·12 claims
- 1572US5538565ARare earth cast alloy permanent magnets and methods of preparationSEIKO EPSON CORP·Filed 1993·Granted Jul 23, 1996·14 cites·8 claims
- 1671US12163245B2Titanium material and coated titanium materialNIPPON STEEL CORP·Filed 2020·Granted Dec 10, 2024·0 cites·2 claims
- 1771US6139765AMagnetic powder, permanent magnet produced therefrom and process for producing themSEIKO EPSON CORP·Filed 1997·Granted Oct 31, 2000·25 cites·15 claims
- 1870US6136099ARare earth-iron series permanent magnets and method of preparationSEIKO EPSON CORP·Filed 1993·Granted Oct 24, 2000·14 cites·24 claims
- 1970US5647886AMagnetic powder, permanent magnet produced therefrom and process for producing themSEIKO EPSON CORP·Filed 1994·Granted Jul 15, 1997·22 cites·28 claims
- 2068US5125988ARare earth-iron system permanent magnet and process for producing the sameSEIKO EPSON CORP·Filed 1988·Granted Jun 30, 1992·15 cites·17 claims
- 2167US7556907B2Liquid developerSEIKO EPSON CORP·Filed 2006·Granted Jul 7, 2009·2 cites·15 claims
- 2266US5213631ARare earth-iron system permanent magnet and process for producing the sameSEIKO EPSON CORP·Filed 1991·Granted May 25, 1993·18 cites·24 claims
- 2365US12442085B2Surface-treated steel sheetNIPPON STEEL CORP·Filed 2022·Granted Oct 14, 2025·0 cites·6 claims
- 2465US7862976B2Liquid developer and image forming apparatusSEIKO EPSON CORP·Filed 2007·Granted Jan 4, 2011·2 cites·16 claims
- 2563US10370735B2Heat treated steel product having high strength and excellent chemical conversion coating ability and method of production of sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Aug 6, 2019·0 cites·4 claims
- 2662US6143193ARare earth bonded magnet, rare earth magnetic composition, and method for manufacturing rare earth bonded magnetSEIKO EPSON CORP·Filed 1996·Granted Nov 7, 2000·18 cites·22 claims
- 2762US5565043ARare earth cast alloy permanent magnets and methods of preparationSEIKO EPSON CORP·Filed 1994·Granted Oct 15, 1996·10 cites·34 claims
- 2859US8021815B2Liquid developer and image forming deviceSEIKO EPSON CORP·Filed 2008·Granted Sep 20, 2011·1 cites·4 claims
- 2956US12474010B2Oil-well metal pipeNIPPON STEEL CORP·Filed 2023·Granted Nov 18, 2025·0 cites·4 claims
- 3056US5888417ARare earth bonded magnet and composition thereforSEIKO EPSON CORP·Filed 1996·Granted Mar 30, 1999·22 cites·16 claims
- 3154US7756444B2Liquid DeveloperSEIKO EPSON CORP·Filed 2009·Granted Jul 13, 2010·0 cites·4 claims
- 3253US5536334APermanent magnet and a manufacturing method thereofSEIKO EPSON CORP·Filed 1994·Granted Jul 16, 1996·12 cites·8 claims
- 3351US6387293B1Composition for rare earth bonded magnet use, rare earth bonded magnet and method for manufacturing rare earth bonded magnetSEIKO EPSON CORP·Filed 1999·Granted May 14, 2002·10 cites·26 claims
- 3450US10851465B2Zinc-based plated steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Dec 1, 2020·0 cites·6 claims
- 3550US5733580ADies for extrusion mouldingSEIKO EPSON CORP·Filed 1996·Granted Mar 31, 1998·15 cites·4 claims
- 3649US7932009B2Liquid developer and image forming apparatusSEIKO EPSON CORP·Filed 2007·Granted Apr 26, 2011·0 cites·14 claims
- 3749US7247414B2Method for producing resin particles and toner using the resin particlesSEIKO EPSON CORP·Filed 2004·Granted Jul 24, 2007·0 cites·44 claims
- 3849US5352302AMethod of producing a rare-earth permanent magnetSEIKO EPSON CORP·Filed 1992·Granted Oct 4, 1994·10 cites·9 claims
- 3948US5186761AMagnetic alloy and method of productionSEIKO EPSON CORP·Filed 1991·Granted Feb 16, 1993·9 cites·15 claims
- 4047US10987695B2Hot-dip zinc-based plated steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Apr 27, 2021·0 cites·13 claims
- 4147US2020032360A1Hot stamped bodyNIPPON STEEL CORP·Filed 2017·Application pending·0 cites
- 4246US7943282B2Liquid developer and image forming apparatusSEIKO EPSON CORP·Filed 2007·Granted May 17, 2011·0 cites·12 claims
- 4343US7883825B2Image forming apparatus and method for forming an image on a recording mediumSEIKO EPSON CORP·Filed 2006·Granted Feb 8, 2011·0 cites·6 claims
- 4443US2018030582A1Zinc-based plated steel sheetNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Application pending·0 cites
- 4543US2019160507A1Hot stamped steelNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Application pending·0 cites
- 4642US11028276B2Surface-treated metal sheet, coated member, and method for producing coated memberNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Jun 8, 2021·0 cites·10 claims
- 4742US8080355B2Liquid developer and image forming apparatusTESHIMA TAKASHI·Filed 2008·Granted Dec 20, 2011·0 cites·12 claims
- 4841US5460662APermanent magnet and method of productionSEIKO EPSON CORP·Filed 1994·Granted Oct 24, 1995·5 cites·24 claims
- 4941US2008299480A1Liquid Developer Process for Producing Liquid Developer, and Image Forming ApparatusSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 5041US2008299481A1Liquid Developer and Image Forming ApparatusSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
Showing the top 50 of 54 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →