Inventor
UTSUMI TOMOKO
JP16 patents
⚠️ This page may combine multiple inventors who share the name “UTSUMI TOMOKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
15 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
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
US7288353B2Oct 30, 2007
Toner, developer, image developer and image forming apparatus
RICOH KK18 citations93
US7261989B2Aug 28, 2007
Toner for developing electrostatic images, developer, image forming method, and image forming apparatus
RICOH KK49 citations93
US7258959B2Aug 21, 2007
Toner for electrophotography and image forming apparatus
RICOH KK42 citations93
US7172844B2Feb 6, 2007
Toner for electrophotography, and image forming process, process cartridge and image forming apparatus using the same
RICOH KK36 citations93
US7169525B2Jan 30, 2007
Toner, developer, image forming apparatus, process cartridge and image forming process
RICOH KK37 citations93
US7759036B2Jul 20, 2010
Toner and production method thereof, image forming apparatus and image forming method, and process cartridge
RICOH KK17 citations84
US7566521B2Jul 28, 2009
Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method
RICOH KK11 citations84
US7522857B2Apr 21, 2009
Toner, image forming apparatus using the same and process cartridge
RICOH KK14 citations84
US7442484B2Oct 28, 2008
Image forming method using toner
RICOH KK16 citations83
US7749674B2Jul 6, 2010
Toner, developer, image developer and image forming apparatus
RICOH KK4 citations63
US7642032B2Jan 5, 2010
Toner, developer, image forming apparatus and image forming method
RICOH KK5 citations62