Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6798125 | Spark plug having ground electrode made of NI alloy and noble metal wear resistant portion | Yoshihisa Sugiyama | 2004-09-28 |
YS
Yoshitaka Sugiura
Overall (2004): #81,495 of 270,089Top 35%
1
Patents 2004