Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9083155 | Spark plug with an improved separation resistance of a noble metal tip | Tomoyuki Igarashi | 2015-07-14 |
| 8766521 | Spark plug | Naomichi Miyashita, Mamoru Musasa | 2014-07-01 |
| 7367303 | Crankshaft of in-line four-cylinder engine | Takeshi Yamamoto, Takayuki Aoyama, Mizuho Inagaki, Nobuyuki Mori | 2008-05-06 |