Keisuke Sugiyama
59Patents
7h-index
69Co-inventors
71Inventor score
Filing activity: Feb 20, 2007 → Jun 20, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8010026B2 | Image forming system and method of detecting color misregistration | Physics | 22 | Active |
| US7653332B2 | Image forming apparatus having enhanced controlling method for reducing deviation of superimposed images | Physics | 13 | Active |
| US7630657B2 | Method, apparatus, and program for image forming capable of effectively adjusting positional deviation | Physics | 12 | Active |
| US7693468B2 | Image forming apparatus capable of effectively forming a quality color image | Physics | 11 | Active |
| US7697867B2 | Image forming apparatus with fluctuation-pattern detection and fine-tuning-pattern correction | Physics | 7 | Active |
| US8496239B2 | Sheet processing apparatus, image forming system, and sheet processing method | Performing Operations; Transporting | 7 | Active |
| US8936240B2 | Sheet discharging device, image forming system, and sheet discharging method | Performing Operations; Transporting | 7 | Active |
| US8925917B2 | Sheet output device, sheet processing apparatus, image forming system, and sheet output method | Physics | 6 | Active |
| US9085436B2 | Sheet ejecting device, image forming system, and sheet ejecting method | Performing Operations; Transporting | 6 | Active |
| US8712299B2 | Image forming apparatus having a primary transfer unit, a secondary transfer unit, and a direct transfer unit | Physics | 5 | Active |
| US8393618B2 | Skew correction device, sheet handling apparatus, and image forming system | Performing Operations; Transporting | 5 | Active |
| US9221648B2 | Sheet processing device, image forming system, and method of additionally folding sheet bundle | Performing Operations; Transporting | 5 | Active |
| US8727345B2 | Sheet discharging device, sheet processing apparatus, image forming system, and sheet discharging method | Performing Operations; Transporting | 5 | Active |
| US8485514B2 | Sheet processing apparatus, image forming system, and sheet processing method | Performing Operations; Transporting | 4 | Active |
| US8521046B2 | Image forming apparatus | Physics | 4 | Active |
| US8398067B2 | Sheet processing apparatus and image forming apparatus | Performing Operations; Transporting | 4 | Active |
| US7937007B2 | Image forming apparatus and image forming method of effectively detecting a speed deviation pattern of the image forming apparatus | Physics | 4 | Active |
| US9075377B2 | Recording medium discharging device | Physics | 3 | Active |
| US8931773B2 | Sheet folding device having inclined stacking surface | Performing Operations; Transporting | 3 | Active |
| US9260264B2 | Sheet discharging device, image forming system, and sheet discharging method | Performing Operations; Transporting | 3 | Active |
| US9561927B2 | Sheet discharging device, image forming system, and sheet discharging method | Performing Operations; Transporting | 2 | Active |
| US9126797B2 | Sheet processing apparatus and image forming system | Performing Operations; Transporting | 2 | Active |
| US8260179B2 | Image forming apparatus including first and second image forming devices and first and second belt units | Physics | 2 | Active |
| US8960660B2 | Sheet processing apparatus and image forming system | Performing Operations; Transporting | 2 | Active |
| US8702087B2 | Sheet handling apparatus, image forming system, and sheet reception control method | Performing Operations; Transporting | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.