Inventor
FUJINUMA YOSHITAKA
JP34 patents
⚠️ This page may combine multiple inventors who share the name “FUJINUMA YOSHITAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI KOKI KK
11 patentsUS5923933AJul 13, 1999
Electrophotographic apparatus
HITACHI KOKI KK49 citations92
US6285846B1Sep 4, 2001
Fixing device
HITACHI KOKI KK17 citations84
US6415120B1Jul 2, 2002
Corona discharging apparatus for use in electrophotographic printing apparatus
HITACHI KOKI KK15 citations80
USD467265SDec 17, 2002
Fixing device
HITACHI KOKI KK8 citations74
USD463818SOct 1, 2002
Developer bottle
HITACHI KOKI KK8 citations73
US6330414B1Dec 11, 2001
Developing system having a plurality of developing rollers with opposing magnets of same polarity
HITACHI KOKI KK14 citations71
USD441011SApr 24, 2001
Toner bottle cap
HITACHI KOKI KK5 citations63
US5907755AMay 25, 1999
Developing device
HITACHI KOKI KK6 citations63
US6259883B1Jul 10, 2001
Imaging forming apparatus having a toner exhausting device
HITACHI KOKI KK3 citations62
USD438892SMar 13, 2001
Photosensitive drum for printer
HITACHI KOKI KK2 citations62
US6341210B1Jan 22, 2002
Toner cartridge
HITACHI KOKI KK0 citations52
RICOH CO LTD
10 patentsUS7904001B2Mar 8, 2011
Developing unit, process cartridge, and image forming apparatus having a plurality of conveyor members, a supply part, and a discharge part
RICOH CO LTD7 citations84
US8374528B2Feb 12, 2013
Developing device, process cartridge, and image forming apparatus that house a developing agent for forming an image
RICOH CO LTD2 citations63
US8045900B2Oct 25, 2011
Developing device, process cartridge, and image forming apparatus that house a developing agent for forming an image
RICOH CO LTD3 citations63
US8041269B2Oct 18, 2011
Development apparatus having two developer bearers and two development chambers
RICOH CO LTD4 citations63
US8010020B2Aug 30, 2011
Developing device and image forming apparatus equipped with the same
RICOH CO LTD2 citations63
US11141976B2Oct 12, 2021
Liquid discharge head, liquid discharge device, and liquid discharge apparatus
RICOH CO LTD0 citations61
US8346134B2Jan 1, 2013
Developing device and image forming apparatus that include a developer transport amount regulation part
RICOH CO LTD2 citations60
US8045893B2Oct 25, 2011
Developing device and image forming apparatus including inclined transport screw
RICOH CO LTD5 citations60
US8027623B2Sep 27, 2011
Developing device, process cartridge, and image forming apparatus having a discharge port facing a section of a transport member without a screw part
RICOH CO LTD3 citations60
US8014706B2Sep 6, 2011
Developing device, process cartridge, and image forming apparatus
RICOH CO LTD1 citations52
RICOH KK
5 patentsUS7826775B2Nov 2, 2010
Developing device and image forming apparatus
RICOH KK8 citations84
US7580657B2Aug 25, 2009
Developing device in image-forming device
RICOH KK9 citations84
US7792465B2Sep 7, 2010
Developing device, process cartridge, and image forming apparatus
RICOH KK7 citations74
US7792466B2Sep 7, 2010
Image forming apparatus and developing device
RICOH KK3 citations63
US7616915B2Nov 10, 2009
Image forming apparatus having a force-converting mechanism to detach a rotary body
RICOH KK0 citations48
RICOH PRINTING SYS LTD
3 patentsTATEYAMA SUSUMU
2 patentsUS8145102B2Mar 27, 2012
Developing device, process cartridge, image forming apparatus and developer discharge device having a discharge port
TATEYAMA SUSUMU2 citations59
US8620194B2Dec 31, 2013
Developing device, process cartridge, image forming apparatus, and developer discharge device having a discharge port
TATEYAMA SUSUMU0 citations48