Inventor
KOTSUGAI AKIHIRO
JP51 patents
⚠️ This page may combine multiple inventors who share the name “KOTSUGAI AKIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
35 patentsUS7374851B2May 20, 2008
Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming method
RICOH KK67 citations98
US7318989B2Jan 15, 2008
Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method
RICOH KK71 citations98
US6716561B2Apr 6, 2004
Toner for developing electrostatic latent image and image forming method using same
RICOH KK75 citations98
US6653037B2Nov 25, 2003
Toner for developing latent electrostatic images, and image forming method and device
RICOH KK91 citations98
US6852459B2Feb 8, 2005
Color toner, method for manufacturing the toner, and image forming apparatus and method using the toner
RICOH KK53 citations96
US6472118B1Oct 29, 2002
Carrier for developer for electrophotography
RICOH KK43 citations96
US6168894B1Jan 2, 2001
Image forming method and dry toner therefor
RICOH KK79 citations96
US5368972ANov 29, 1994
Method of preparing composite particles comprising adhering wax particles to the surface of resin particles
RICOH KK107 citations96
US6004715ADec 21, 1999
Toner for developing electrostatic images
RICOH KK75 citations94
US5429901AJul 4, 1995
Toner for use in electrostatic development
RICOH KK61 citations94
US7521164B2Apr 21, 2009
Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming method
RICOH KK22 citations93
US7368212B2May 6, 2008
Toner for developing electrostatic image, developer, image forming apparatus, process for forming image, process cartridge and process for measuring porosity of toner
RICOH KK23 citations93
US7258959B2Aug 21, 2007
Toner for electrophotography and image forming apparatus
RICOH KK42 citations93
US6743558B2Jun 1, 2004
Carrier for electrophotographic developer
RICOH KK41 citations93
US6739534B2May 25, 2004
Carrier for developer for electrophotography
RICOH KK24 citations93
US6696213B2Feb 24, 2004
Method of developing a latent electrostatic image
RICOH KK24 citations93
US6599672B2Jul 29, 2003
Carrier for developer for electrophotography
RICOH KK24 citations93
US6489073B2Dec 3, 2002
Method and device for developing electrostatic latent images
RICOH KK34 citations93
US6010814AJan 4, 2000
Electrophotographic toner composition and image formation method using the composition
RICOH KK42 citations93
US7455942B2Nov 25, 2008
Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method using the same
RICOH KK41 citations92
US7192679B2Mar 20, 2007
Carrier for electrophotographic developer
RICOH KK24 citations92
US7049037B2May 23, 2006
Color toner, method for manufacturing the toner, and image forming apparatus and method using the toner
RICOH KK25 citations92
US5912100AJun 15, 1999
Toner for developing electrostatic images
RICOH KK48 citations91
US5418103AMay 23, 1995
Toner for developing latent electrostatic images
RICOH KK28 citations91
US7566521B2Jul 28, 2009
Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method
RICOH KK11 citations84
US7368213B2May 6, 2008
Toner and fixing device and image forming device using the same
RICOH KK17 citations84
US7320852B2Jan 22, 2008
Carrier for developer for developing electrostatic latent image, developer using same and image forming method using same
RICOH KK9 citations84
US6735409B2May 11, 2004
Process for developing, image-forming apparatus, and image-forming process cartridge
RICOH KK16 citations84
US7442484B2Oct 28, 2008
Image forming method using toner
RICOH KK16 citations83
US7608377B2Oct 27, 2009
Image forming method and image forming apparatus
RICOH KK7 citations74
US6939654B2Sep 6, 2005
Carrier and developer for developing latent electrostatic images
RICOH KK10 citations73
US7709174B2May 4, 2010
Toner, method of preparing the toner, and developer, image forming method, image forming apparatus, and process cartridge using the toner
RICOH KK5 citations63
US7547497B2Jun 16, 2009
Toner, and developer, image developer and image forming apparatus using the toner
RICOH KK2 citations63
US7642032B2Jan 5, 2010
Toner, developer, image forming apparatus and image forming method
RICOH KK5 citations62
US7608373B2Oct 27, 2009
Toner for developing electrostatic latent image, developer using the toner, and process cartridge, image forming apparatus and image forming method using the developer
RICOH KK0 citations52
RICOH CO LTD
5 patentsUS8017292B2Sep 13, 2011
Toner, as well as image forming apparatus and image forming method using the same
RICOH CO LTD3 citations63
US8007974B2Aug 30, 2011
Toner, image forming apparatus using the same, image forming method using the same, and process cartridge
RICOH CO LTD5 citations63
US7960083B2Jun 14, 2011
Image forming apparatus, image forming method, and process cartridge
RICOH CO LTD2 citations63
US7862973B2Jan 4, 2011
Toner and developer, and image forming apparatus, image forming method and process cartridge
RICOH CO LTD4 citations63
US8383307B2Feb 26, 2013
Toner, developer, and image forming method and apparatus using the toner
RICOH CO LTD1 citations52
INOUE RYOTA
3 patentsUS8679714B2Mar 25, 2014
Toner, developer, and image forming method
INOUE RYOTA2 citations61
US8691486B2Apr 8, 2014
Electrostatic image developing toner, developer, image forming apparatus, image forming method, and process cartridge
INOUE RYOTA0 citations51
US8329374B2Dec 11, 2012
Carrier, production method thereof, developer and image forming method
INOUE RYOTA0 citations51
NAKAYAMA SHINYA
2 patentsKOTSUGAI AKIHIRO
2 patentsUS8771914B2Jul 8, 2014
Toner for developing latent electrostatic image, two-component developer, image forming method and image forming apparatus
KOTSUGAI AKIHIRO3 citations59
US8603713B2Dec 10, 2013
Toner, and developer, toner cartridge, image forming apparatus, process cartridge and image forming method using the same
KOTSUGAI AKIHIRO0 citations48
MORIYA YOSHIHIRO
1 patentSAWADA TOYOSHI
1 patentSABU AKIYOSHI
1 patentShowing the top 50 of 51 patents by PatentIndex Score.