Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9917425 | Spark plug | Takafumi Umemura, Tomoki Kawai | 2018-03-13 |
KK
Kouji Kamikawa
Overall (All Time): #2,880,358 of 4,157,543Top 70%
1
Patents All Time