Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7426087 | Information recording apparatus | Akio Fujikawa | 2008-09-16 |
| 7019929 | Disk recording apparatus with erroneous writing protection | Akio Fujikawa | 2006-03-28 |
RK
Ryousuke Kumagai
Overall (All Time): #2,150,064 of 4,157,543Top 55%
2
Patents All Time