Inventor

TAKEI AKIO

JP9 patents

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

RICOH CO LTD

3 patents

US11340540B2May 24, 2022

Image forming apparatus and image forming method

RICOH CO LTD2 citations71

US12287605B2Apr 29, 2025

Toner and production method thereof, toner stored unit, image forming apparatus, and image forming method

RICOH CO LTD0 citations58

US11796931B2Oct 24, 2023

Toner, method for manufacturing toner, developer, toner accommodating unit, image forming apparatus, and image forming method

RICOH CO LTD0 citations58

INOUE DAISUKE

1 patent

US9989869B2Jun 5, 2018

Toner, toner stored unit, and image forming apparatus

INOUE DAISUKE2 citations72

MATSUDA RYOHEI

1 patent

US10571834B2Feb 25, 2020

Fixing method, image forming method, and image forming apparatus

MATSUDA RYOHEI1 citations61

YAMADA HIROSHI

1 patent

US12306580B2May 20, 2025

Toner and production method thereof, and toner stored unit, image forming apparatus, and image forming method

YAMADA HIROSHI0 citations60

KAMADA YASUO

1 patent

US12204277B2Jan 21, 2025

Toner, developer, toner storage unit, image forming apparatus, and image forming method

KAMADA YASUO0 citations53

YOSHIDA RYUUTA

1 patent

US12416872B2Sep 16, 2025

Toner, developing agent, toner stored unit, and image forming apparatus

YOSHIDA RYUUTA0 citations45

SAITOH AKINORI

1 patent

US12411429B2Sep 9, 2025

Toner, developer, toner storage unit, image forming apparatus, and image forming method

SAITOH AKINORI0 citations39