Inventor
TSUDA KIYONORI
JP66 patents
⚠️ This page may combine multiple inventors who share the name “TSUDA KIYONORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
33 patentsUS7480476B2Jan 20, 2009
Developer container, developer supplying device, and image forming apparatus
RICOH KK115 citations99
US7321744B2Jan 22, 2008
Developer container, developer supplying device, and image forming apparatus
RICOH KK111 citations99
US7072602B2Jul 4, 2006
Image forming apparatus and image forming unit
RICOH KK122 citations99
US6522855B1Feb 18, 2003
Image forming apparatus and developing apparatus preventing uneven image density
RICOH KK161 citations99
US6337957B1Jan 8, 2002
Image forming apparatus and developing device with improved self toner density control
RICOH KK191 citations99
US7697870B2Apr 13, 2010
Developer container, developer supplying device, and image forming apparatus
RICOH KK54 citations98
US7519317B2Apr 14, 2009
Developer container, developer supplying device, and image forming apparatus
RICOH KK72 citations98
US7184691B2Feb 27, 2007
Toner container, toner supply device and image forming apparatus
RICOH KK81 citations98
USD532037SNov 14, 2006
Toner cartridge
RICOH KK84 citations98
US6198895B1Mar 6, 2001
Developing device with improved developer circulation and toner density control
RICOH KK133 citations98
US6125243ASep 26, 2000
Toner replenishing and developer replacing device for a developing unit of an image forming apparatus
RICOH KK106 citations97
US5915155AJun 22, 1999
Toner replenishing and developer replacing device for a developing unit of an image forming apparatus
RICOH KK110 citations97
US7162189B2Jan 9, 2007
Method and apparatus of image forming and process cartridge included in the apparatus
RICOH KK53 citations96
US7076192B2Jul 11, 2006
Powder conveying device and image forming apparatus using the same
RICOH KK55 citations96
US5805965ASep 8, 1998
Developing device for an image forming apparatus having developer distribution features
RICOH KK83 citations96
US5771426AJun 23, 1998
Developing device using a toner and carrier mixture
RICOH KK67 citations96
US5758241AMay 26, 1998
Developing device for an image forming apparatus
RICOH KK56 citations96
US5659860AAug 19, 1997
Developing device for an image forming apparatus and toner cartridge
RICOH KK84 citations94
US7398038B2Jul 8, 2008
Image forming apparatus using a toner container and a process cartridge
RICOH KK47 citations93
US7212767B2May 1, 2007
Image forming apparatus and process cartridge removably mounted thereto
RICOH KK27 citations93
US7146122B2Dec 5, 2006
Image forming apparatus and image forming unit
RICOH KK15 citations93
US7062207B2Jun 13, 2006
Powder transport apparatus and image forming apparatus that can stabilize replenishment of powder
RICOH KK26 citations93
US7577379B2Aug 18, 2009
Toner container, toner supply device and image forming apparatus
RICOH KK42 citations92
US7447469B2Nov 4, 2008
Image forming device and mounting member for mounting a toner container thereon
RICOH KK36 citations92
US7136610B2Nov 14, 2006
Image forming apparatus using installable process cartridge, method of positioning process cartridge, and process cartridge itself
RICOH KK38 citations92
USD531662SNov 7, 2006
Toner cartridge
RICOH KK30 citations92
US7024133B2Apr 4, 2006
Image forming apparatus using a user installable process cartridge, a method of arranging the process cartridge, and the process cartridge itself
RICOH KK50 citations92
US5822664AOct 13, 1998
Developing machine which uses a developing agent including a toner and magnetic particles
RICOH KK51 citations92
US5771429AJun 23, 1998
Developing device capable of automatic toner content control
RICOH KK42 citations92
US5999772ADec 7, 1999
Image forming apparatus with support member
RICOH KK32 citations88
US7315715B2Jan 1, 2008
Apparatus, method, and program for image forming
RICOH KK16 citations83
US7003255B2Feb 21, 2006
Image forming apparatus and process cartridge
RICOH KK13 citations82
US7486916B2Feb 3, 2009
Method and apparatus of image forming and process cartridge included in the apparatus
RICOH KK6 citations74
RICOH CO LTD
10 patentsUS8005406B2Aug 23, 2011
Developer container, developer supplying device, and image forming apparatus
RICOH CO LTD60 citations98
US7835673B2Nov 16, 2010
Developer container, developer supplying device, and image forming apparatus
RICOH CO LTD58 citations98
US7962069B2Jun 14, 2011
Toner container, image forming apparatus, method of recycling toner container
RICOH CO LTD19 citations93
US8036575B2Oct 11, 2011
Development device, image forming apparatus, and process cartridge having compact structure for discharging developer
RICOH CO LTD7 citations84
US7962071B2Jun 14, 2011
Developing device and image forming apparatus using same
RICOH CO LTD8 citations83
US7937027B2May 3, 2011
Developing device and image forming apparatus
RICOH CO LTD8 citations83
US10852689B2Dec 1, 2020
Powder container and image forming apparatus
RICOH CO LTD1 citations72
US10635043B2Apr 28, 2020
Powder container and image forming apparatus
RICOH CO LTD1 citations72
US8010020B2Aug 30, 2011
Developing device and image forming apparatus equipped with the same
RICOH CO LTD2 citations63
US7991330B2Aug 2, 2011
Developing unit including developer conveyance system having supply path, recovery path, and agitation path, process cartridge including developing unit, and image forming apparatus including process cartridge
RICOH CO LTD2 citations62
TAKAMI NOBUO
4 patentsUS9176425B2Nov 3, 2015
Developer replenishing device to transport developer from developer container, image forming apparatus including same, and conveyance device to transport powder or fluid from container
TAKAMI NOBUO8 citations83
US10394186B2Aug 27, 2019
Powder container and image forming apparatus
TAKAMI NOBUO1 citations72
US10203650B2Feb 12, 2019
Powder container and image forming apparatus
TAKAMI NOBUO1 citations72
US10048644B2Aug 14, 2018
Powder container and image forming apparatus
TAKAMI NOBUO1 citations62
HOSOKAWA HIROSHI
1 patentTERAI JUNICHI
1 patentYOSHIZAWA HIDEO
1 patentShowing the top 50 of 66 patents by PatentIndex Score.