Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6262522 | Spark plug for internal combustion engine | Hironori Osamura, Nobuo Abe, Keiji Kanao | 2001-07-17 |
| 6094000 | Spark plug for internal combustion engine | Hironori Osamura, Nobuo Abe, Keiji Kanao | 2000-07-25 |
| 5465022 | Spark plug for internal-combustion engine and manufacture method of the same | Akio Katoh, Nobuo Abe, Takeshi Hanai | 1995-11-07 |