Inventor
OKUBO MASAKI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “OKUBO MASAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HODOGAYA CHEMICAL CO LTD
8 patentsUS7709172B2May 4, 2010
Oxidized mixed cyclic phenol sulfides, and charge control agents and toners using the same
HODOGAYA CHEMICAL CO LTD6 citations72
US7094512B2Aug 22, 2006
Electrophotographic printing method, monoazo iron complex compound, charge controlling agent using the same and toner using the charge controlling agent
HODOGAYA CHEMICAL CO LTD7 citations72
US9703223B2Jul 11, 2017
Toner, developer, and toner cartridge
HODOGAYA CHEMICAL CO LTD2 citations68
US7901858B2Mar 8, 2011
Mixed cyclic phenol sulfides, and charge control agents and toners using the same
HODOGAYA CHEMICAL CO LTD5 citations61
US7820832B2Oct 26, 2010
Oxidized mixed cyclic phenol sulfides, and charge control agents and toners using the same
HODOGAYA CHEMICAL CO LTD4 citations61
US7402369B2Jul 22, 2008
Mono azo iron complex compound, and charge controlling agent and toner using the same
HODOGAYA CHEMICAL CO LTD5 citations61
US6627368B2Sep 30, 2003
Organic metal complex compound and electrostatic image developing toner using the same
HODOGAYA CHEMICAL CO LTD4 citations57
US9835965B2Dec 5, 2017
Charge control agent and toner using same
HODOGAYA CHEMICAL CO LTD0 citations38