Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720716 | Spark plug and method for manufacturing the same | Teiji Ishinada, Hiromi Hiramatsu | 2004-04-13 |
| 6694958 | Ignition device for internal combustion engine | Hiromi Hiramatsu, Tetsuya Miwa, Takeo Maekawa | 2004-02-24 |