Yuji Koga
150Patents
16h-index
65Co-inventors
89Inventor score
Filing activity: Dec 30, 1987 → Jan 26, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6056286A | Automatic cut-sheet feeder | Performing Operations; Transporting | 113 | Expired |
| US6619774B1 | Image forming device operable by different power sources | Performing Operations; Transporting | 92 | Expired |
| US7959147B2 | Sheet feeding apparatus and image recording apparatus | Performing Operations; Transporting | 38 | Active |
| US8152161B2 | Image printing devices that perform duplex printing | Emerging Cross-Sectional Technologies | 37 | Active |
| US8493639B2 | Image recording device | Performing Operations; Transporting | 36 | Active |
| US7484837B2 | Liquid supply unit and inkjet recording apparatus with liquid supply unit | Performing Operations; Transporting | 36 | Active |
| US8152169B2 | Feeding device and image recording apparatus with the feeding device | Performing Operations; Transporting | 34 | Active |
| US8240655B2 | Image recording apparatus having pivotable roller arm | Performing Operations; Transporting | 34 | Active |
| US6889134B2 | Communication-type navigation apparatus and server device | Physics | 30 | Expired |
| US6947837B2 | Communication navigation system and method, program storage device and computer data signal embodied in carrier wave | Physics | 26 | Expired |
| US8768235B2 | Double-sided image recording device having a compact form factor | Physics | 25 | Active |
| US6755514B2 | Ink jet printer | Performing Operations; Transporting | 25 | Expired |
| US6810329B2 | Navigation guide device and navigation guide system, method thereof, program therefor, and medium for storing the program | Physics | 18 | Expired |
| US6712190B2 | Wet friction plate assembly | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US8764006B2 | Image recording device | Performing Operations; Transporting | 17 | Active |
| US9051144B2 | Double-sided image recording device having a compact form factor | Physics | 17 | Active |
| US9085430B2 | Image recording device | Performing Operations; Transporting | 16 | Active |
| US9045302B2 | Image recording device having a compact form factor | Physics | 16 | Active |
| US7654515B2 | Image forming device with two attached cassettes and one transportation device | Performing Operations; Transporting | 15 | Active |
| US5240319A | Upper body opening/closing mechanism for electronic equipment | Fixed Constructions | 15 | Expired |
| US9049326B2 | Multifunction device with scanner unit offset from recording sheet tray | Electricity | 14 | Active |
| US9440460B2 | Image recording device with a sheet feeder that contacts a duplex return guide | Physics | 13 | Active |
| US6000870A | Printing device having dual sheet feed trays | Performing Operations; Transporting | 13 | Expired |
| US9283778B2 | Image recording device having a compact form factor | Physics | 13 | Active |
| US9452619B2 | Image recording device having a compact form factor | Physics | 13 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.