Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6401451 | Degradation discrimination system of internal combustion engine exhaust gas purification system | Yuji Yasui, Tadashi Satoh, Masahiro Satoh | 2002-06-11 |
YI
Yushihisa Iwaki
Overall (All Time): #3,547,270 of 4,157,543Top 90%
1
Patents All Time