Inventor
AKIOKA KOJI
JP46 patents
⚠️ This page may combine multiple inventors who share the name “AKIOKA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
35 patentsUS6527971B1Mar 4, 2003
Rare-earth bonded magnet, rare-earth bonded magnet composition, and method of manufacturing the rare-earth bonded magnet
SEIKO EPSON CORP29 citations92
US6500374B1Dec 31, 2002
Method of manufacturing bonded magnets of rare earth metal, and bonded magnet of rare earth metal
SEIKO EPSON CORP43 citations92
US6139765AOct 31, 2000
Magnetic powder, permanent magnet produced therefrom and process for producing them
SEIKO EPSON CORP25 citations92
US5888416AMar 30, 1999
Rare-earth bonded magnet composition, rare-earth bonded magnet and process for producing said rare-earth bonded magnet
SEIKO EPSON CORP35 citations92
US5888417AMar 30, 1999
Rare earth bonded magnet and composition therefor
SEIKO EPSON CORP22 citations92
US5647886AJul 15, 1997
Magnetic powder, permanent magnet produced therefrom and process for producing them
SEIKO EPSON CORP22 citations92
US5597425AJan 28, 1997
Rare earth cast alloy permanent magnets and methods of preparation
SEIKO EPSON CORP28 citations92
US5062095AOct 29, 1991
Actuator and method of manufacturing thereof
SEIKO EPSON CORP45 citations92
US7608376B2Oct 27, 2009
Method of manufacturing liquid developer, liquid developer, and image forming apparatus
SEIKO EPSON CORP8 citations84
US7595140B2Sep 29, 2009
Liquid developer and image forming apparatus
SEIKO EPSON CORP12 citations84
US7514145B2Apr 7, 2009
Method and apparatus for producing resin particles using granulation-prevention agent, and resin particles produced by the method
SEIKO EPSON CORP13 citations83
US6143193ANov 7, 2000
Rare earth bonded magnet, rare earth magnetic composition, and method for manufacturing rare earth bonded magnet
SEIKO EPSON CORP18 citations83
US5213631AMay 25, 1993
Rare earth-iron system permanent magnet and process for producing the same
SEIKO EPSON CORP18 citations82
US5538565AJul 23, 1996
Rare earth cast alloy permanent magnets and methods of preparation
SEIKO EPSON CORP14 citations81
US6387293B1May 14, 2002
Composition for rare earth bonded magnet use, rare earth bonded magnet and method for manufacturing rare earth bonded magnet
SEIKO EPSON CORP10 citations74
US5536334AJul 16, 1996
Permanent magnet and a manufacturing method thereof
SEIKO EPSON CORP12 citations74
US5186761AFeb 16, 1993
Magnetic alloy and method of production
SEIKO EPSON CORP9 citations74
US5125988AJun 30, 1992
Rare earth-iron system permanent magnet and process for producing the same
SEIKO EPSON CORP15 citations74
US6136099AOct 24, 2000
Rare earth-iron series permanent magnets and method of preparation
SEIKO EPSON CORP14 citations73
US5565043AOct 15, 1996
Rare earth cast alloy permanent magnets and methods of preparation
SEIKO EPSON CORP10 citations73
US5352302AOct 4, 1994
Method of producing a rare-earth permanent magnet
SEIKO EPSON CORP10 citations73
US5733580AMar 31, 1998
Dies for extrusion moulding
SEIKO EPSON CORP15 citations70
US7723005B2May 25, 2010
Liquid developer
SEIKO EPSON CORP5 citations63
US7563550B2Jul 21, 2009
Liquid developer and image forming apparatus
SEIKO EPSON CORP4 citations63
US7556907B2Jul 7, 2009
Liquid developer
SEIKO EPSON CORP2 citations63
US5460662AOct 24, 1995
Permanent magnet and method of production
SEIKO EPSON CORP5 citations63
US5076861ADec 31, 1991
Permanent magnet and method of production
SEIKO EPSON CORP4 citations63
US7862976B2Jan 4, 2011
Liquid developer and image forming apparatus
SEIKO EPSON CORP2 citations62
US5560784AOct 1, 1996
Rare earth cast alloy permanent magnets and methods of preparation
SEIKO EPSON CORP1 citations62
US8021815B2Sep 20, 2011
Liquid developer and image forming device
SEIKO EPSON CORP1 citations52
US7932009B2Apr 26, 2011
Liquid developer and image forming apparatus
SEIKO EPSON CORP0 citations52
US7756444B2Jul 13, 2010
Liquid Developer
SEIKO EPSON CORP0 citations52
US7247414B2Jul 24, 2007
Method for producing resin particles and toner using the resin particles
SEIKO EPSON CORP0 citations52
US7943282B2May 17, 2011
Liquid developer and image forming apparatus
SEIKO EPSON CORP0 citations48
US7883825B2Feb 8, 2011
Image forming apparatus and method for forming an image on a recording medium
SEIKO EPSON CORP0 citations42
NIPPON STEEL & SUMITOMO METAL CORP
5 patentsUS10549506B2Feb 4, 2020
Hot-dip zinc-based plated steel sheet
NIPPON STEEL & SUMITOMO METAL CORP7 citations82
US10370735B2Aug 6, 2019
Heat treated steel product having high strength and excellent chemical conversion coating ability and method of production of same
NIPPON STEEL & SUMITOMO METAL CORP0 citations52
US11028276B2Jun 8, 2021
Surface-treated metal sheet, coated member, and method for producing coated member
NIPPON STEEL & SUMITOMO METAL CORP0 citations50
US10987695B2Apr 27, 2021
Hot-dip zinc-based plated steel sheet
NIPPON STEEL & SUMITOMO METAL CORP0 citations50
US10851465B2Dec 1, 2020
Zinc-based plated steel sheet
NIPPON STEEL & SUMITOMO METAL CORP0 citations40
NIPPON STEEL CORP
4 patentsUS12459034B2Nov 4, 2025
Method for manufacturing riveted joint, riveted joint, and vehicle component
NIPPON STEEL CORP1 citations64
US12442085B2Oct 14, 2025
Surface-treated steel sheet
NIPPON STEEL CORP0 citations61
US12474010B2Nov 18, 2025
Oil-well metal pipe
NIPPON STEEL CORP0 citations52
US12163245B2Dec 10, 2024
Titanium material and coated titanium material
NIPPON STEEL CORP0 citations52