Inventor
OTSUKA HIDEYUKI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “OTSUKA HIDEYUKI”. 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
US10474050B2Nov 12, 2019
Toner and charge control agent using pyrazolone derivative or salt of derivative
HODOGAYA CHEMICAL CO LTD3 citations70
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
US6897000B2May 24, 2005
Charge controlling agent, method for producing the same and toner for developing electrostatic image
HODOGAYA CHEMICAL CO LTD1 citations52
US9056884B2Jun 16, 2015
Process for producing a charge control agent
HODOGAYA CHEMICAL CO LTD0 citations36
SUMITOMO RIKO CO LTD
2 patentsUS9954162B2Apr 24, 2018
Reactive ionic liquid, and ion-immobilized metal oxide particle, ion-immobilized elastomer, and transducer using same
SUMITOMO RIKO CO LTD0 citations48
US9550865B2Jan 24, 2017
Reactive ionic liquid, and ion-immobilized metal oxide particle, ion-immobilized elastomer, and transducer using same
SUMITOMO RIKO CO LTD0 citations48