Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4601848 | Resistor compositions for producing a resistor in resistor-incorporated spark plugs | Masao Sakai, Makoto Sugimoto, Yutaka Tanaka, Yukihiko Ito | 1986-07-22 |
| 4446058 | Resistor composition for resistor-incorporated spark plugs | Masao Sakai, Yasuhiko Suzuki, Makoto Sugimoto | 1984-05-01 |