Inventor
KUMADA KATSUMI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “KUMADA KATSUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
6 patentsUS6094549AJul 25, 2000
Electrograph apparatus enabling removal of offensive substances
HITACHI LTD55 citations94
US5491537AFeb 13, 1996
Developing apparatus having developing agent accommodating cartridge and cartridge for accommodating developing agent for use in developing apparatus
HITACHI LTD22 citations92
US5345301ASep 6, 1994
Image fixing device and electrophotographic apparatus incorporated with such device
HITACHI LTD23 citations92
US6400923B1Jun 4, 2002
Fixing device improved in offset-prevention
HITACHI LTD8 citations69
US5604572AFeb 18, 1997
Developing apparatus having developing agent accommodating cartridge and cartridge for accommodating developing agent for use in developing apparatus
HITACHI LTD4 citations63
US6661994B2Dec 9, 2003
Electrophotographic image forming system
HITACHI LTD6 citations61
RICOH CO LTD
3 patentsUS7983596B2Jul 19, 2011
Housing structure and image forming apparatus
RICOH CO LTD2 citations62
US7970311B2Jun 28, 2011
Developing device and image forming apparatus using the same
RICOH CO LTD4 citations62
US7925193B2Apr 12, 2011
Rotary member, developing device, and image forming apparatus
RICOH CO LTD0 citations50