Inventor

Tojo masaya

JP4 patents

⚠️ This page may combine multiple inventors who share the name “Tojo masaya”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HODOGAYA CHEMICAL CO LTD

3 patents

US10474050B2Nov 12, 2019

Toner and charge control agent using pyrazolone derivative or salt of derivative

HODOGAYA CHEMICAL CO LTD3 citations70

US9703223B2Jul 11, 2017

Toner, developer, and toner cartridge

HODOGAYA CHEMICAL CO LTD2 citations68

US9835965B2Dec 5, 2017

Charge control agent and toner using same

HODOGAYA CHEMICAL CO LTD0 citations38

KIMURA IKUO

1 patent

US8790855B2Jul 29, 2014

Charge control agent and toner using same

KIMURA IKUO0 citations30