P

Inventor

SUGIYAMA Ryohhei

JP12 patents
⚠️ This page may combine multiple inventors who share the name “SUGIYAMA Ryohhei”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUGIYAMA Ryohhei

4 patents
US10191423B2Jan 29, 2019

Image forming apparatus including a fixing device

SUGIYAMA Ryohhei2 citations70
US12124194B2Oct 22, 2024

Heating device, fixing device, and image forming apparatus

SUGIYAMA Ryohhei0 citations59
US11703783B2Jul 18, 2023

Fixing device and image forming apparatus

SUGIYAMA Ryohhei0 citations57
US10401766B2Sep 3, 2019

Image forming apparatus and image forming method with temperature and power-based productivity rate selection

SUGIYAMA Ryohhei0 citations38

YOSHINAGA HIROSHI

3 patents
US12422766B2Sep 23, 2025

Fixing device and image forming apparatus incorporating same

YOSHINAGA HIROSHI0 citations62
US12353150B2Jul 8, 2025

Fixing device and image forming apparatus

YOSHINAGA HIROSHI0 citations51
US12197155B2Jan 14, 2025

Heating device, fixing device, and image forming apparatus with heat shield including first portion and second portion

YOSHINAGA HIROSHI0 citations51

MATSUDA RYOHEI

2 patents
US12560879B2Feb 24, 2026

Image forming apparatus

MATSUDA RYOHEI0 citations61
US12197150B2Jan 14, 2025

Fixing device and image forming apparatus incorporating the same

MATSUDA RYOHEI0 citations51

YAMANO MOTOYOSHI

1 patent
US9817345B2Nov 14, 2017

Fixing device, image forming apparatus, and method of controlling fixing device

YAMANO MOTOYOSHI3 citations71

ONO HIROSHI

1 patent
US9696672B2Jul 4, 2017

Drive transmission unit, fixing device with drive transmission unit, and image forming apparatus having fixing device with drive transmission unit

ONO HIROSHI2 citations68

YAMASHITA KENTARO

1 patent
US12386293B2Aug 12, 2025

Fixing device and image forming apparatus with a controller to switch between a first heating and a second heating

YAMASHITA KENTARO0 citations43