Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7398754 | Piston for internal combustion engine | Akito Tanihata, Naoko Sato, Hisayasu Kojima, Takashi Shiraishi | 2008-07-15 |
| D514742 | Lighter | — | 2006-02-07 |
KK
Kouji Katsumata
Tokai: 1 patents #25 of 68Top 40%
Overall (All Time): #2,148,290 of 4,157,543Top 55%
2
Patents All Time