Inventor
KUMA KAZUOSA
JP40 patents
⚠️ This page may combine multiple inventors who share the name “KUMA KAZUOSA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
26 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
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
US6898407B2May 24, 2005
Desktop color image forming apparatus and method of making the same
RICOH KK61 citations96
US7447469B2Nov 4, 2008
Image forming device and mounting member for mounting a toner container thereon
RICOH KK36 citations92
US7263309B2Aug 28, 2007
Desktop color image forming apparatus and method of making the same
RICOH KK15 citations92
US7215907B2May 8, 2007
Method and apparatus for image forming capable of effectively eliminating color displacements
RICOH KK32 citations92
US7181152B2Feb 20, 2007
Image forming apparatus for reliably holding attachable units
RICOH KK28 citations92
US7016629B2Mar 21, 2006
Image forming apparatus with discharging unit of increased capacity
RICOH KK30 citations92
US6970665B2Nov 29, 2005
Image forming apparatus with detachable power-requiring unit
RICOH KK20 citations92
US7627268B2Dec 1, 2009
Image forming apparatus capable of providing a stable belt movement in a belt unit
RICOH KK10 citations84
US7509073B2Mar 24, 2009
Image forming apparatus and belt unit
RICOH KK19 citations84
US7499665B2Mar 3, 2009
Belt device including an annular belt, and an image forming apparatus for detection of rotational angular speed or rotational angular displacement
RICOH KK11 citations84
US7400851B2Jul 15, 2008
Image forming apparatus with pressure applying members that apply pressure to support shafts
RICOH KK11 citations84
US7333749B2Feb 19, 2008
Desktop color image forming apparatus and method of making the same
RICOH KK10 citations84
US7174121B2Feb 6, 2007
Apparatus for image forming and image developing with an improvement of toner container holding
RICOH KK14 citations84
US7313344B2Dec 25, 2007
Image forming apparatus with detachable power-requiring unit and unit positioning member
RICOH KK7 citations74
US7164874B2Jan 16, 2007
Image forming apparatus with detachable power-requiring unit
RICOH KK5 citations74
US7620345B2Nov 17, 2009
Image forming apparatus including an operation panel provided on a facing
RICOH KK3 citations63
US7609998B2Oct 27, 2009
Transfer unit and image forming apparatus
RICOH KK6 citations63
US7606521B2Oct 20, 2009
Desktop color image forming apparatus and method of making the same
RICOH KK3 citations63
US7406283B2Jul 29, 2008
Desktop color image forming apparatus and method of making the same
RICOH KK3 citations63
US7831161B2Nov 9, 2010
Method and apparatus for image forming of effectively detecting image data
RICOH KK4 citations62
US7706727B2Apr 27, 2010
Apparatus for image forming and image developing with an improvement of toner container holding
RICOH KK1 citations52
US7302200B2Nov 27, 2007
Image forming apparatus
RICOH KK1 citations48
RICOH CO LTD
6 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
US7933546B2Apr 26, 2011
Lubricant applying device and image forming apparatus
RICOH CO LTD11 citations84
US7899386B2Mar 1, 2011
Image forming apparatus and guide therefor capable of reducing toner scattered on recording medium
RICOH CO LTD9 citations84
US7885588B2Feb 8, 2011
Transfer assembly and image forming apparatus including same
RICOH CO LTD6 citations62
US7848692B2Dec 7, 2010
Neutralization unit and image forming apparatus having a neutralization unit for removing electric charge
RICOH CO LTD6 citations62
KUMA KAZUOSA
3 patentsUS8219000B2Jul 10, 2012
Image forming apparatus capable of effectively performing a maintenance operation
KUMA KAZUOSA6 citations71
US8249468B2Aug 21, 2012
Image forming apparatus
KUMA KAZUOSA5 citations61
US9198268B2Nov 24, 2015
Static eliminator and image forming apparatus including same
KUMA KAZUOSA0 citations40