Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6724133 | Spark plug with nickel alloy electrode base material | Naomichi Miyashita, Yoshihiro Matsubara, Wataru Matsutani, Masayuki Segawa, Hiroaki Kuki | 2004-04-20 |
| 6707237 | Spark plug | Hideki Teramura, Junichi Kagawa | 2004-03-16 |