Inventor

SUGANUMA TAKUYA

JP14 patents

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

SUGANUMA TAKUYA

3 patents

US9304454B2Apr 5, 2016

Fixing device and image forming apparatus incorporating same

SUGANUMA TAKUYA10 citations79

US10969708B2Apr 6, 2021

Developing device, process cartridge, and image forming apparatus

SUGANUMA TAKUYA0 citations49

US8190067B2May 29, 2012

Developing device, toner cartridge, process cartridge, and image forming apparatus including a developer guide member

SUGANUMA TAKUYA0 citations48

RICOH CO LTD

2 patents

US8385793B2Feb 26, 2013

Image forming apparatus preventing gaps between a conveyor belt and transfer sheet

RICOH CO LTD8 citations84

US7890031B2Feb 15, 2011

Developing device and process cartridge used in image forming apparatus

RICOH CO LTD0 citations51

SUZUKI HIROKATSU

1 patent

US8422897B2Apr 16, 2013

Image forming apparatus

SUZUKI HIROKATSU6 citations71

SUGIYAMA HIROYUKI

1 patent

US9025977B2May 5, 2015

Image forming apparatus

SUGIYAMA HIROYUKI3 citations61

YABUTA YUTA

1 patent

US12533617B2Jan 27, 2026

Filter holding device, developing device, process cartridge, and image forming apparatus

YABUTA YUTA0 citations52

HASHIKAWA HOTARU

1 patent

US11880160B2Jan 23, 2024

Filter holding device, developing device, process cartridge, image forming apparatus, and filter

HASHIKAWA HOTARU0 citations51

MASUDA MINORU

1 patent

US11934145B2Mar 19, 2024

Developing apparatus, developer for electrophotographic image formation, electrophotographic image forming method, and electrophotographic image forming apparatus

MASUDA MINORU0 citations49

SAITOH KAZUYA

1 patent

US9042778B2May 26, 2015

Powder refilling device, process cartridge and image including same, and powder refilling method

SAITOH KAZUYA1 citations48

ENOKI SHIGEKAZU

1 patent

US8483598B2Jul 9, 2013

Electrophotographic image forming method and apparatus with a cover film supplying device

ENOKI SHIGEKAZU1 citations45

CHIBA YUSUKE

1 patent

US12050414B2Jul 30, 2024

Developing device including filter detachable holder, process cartridge, and image forming apparatus

CHIBA YUSUKE0 citations41

HOSHI SHOHTAROH

1 patent

US12508527B2Dec 30, 2025

Filter holding device, developing device, process cartridge, and image forming apparatus

HOSHI SHOHTAROH0 citations39