Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6755483 | Tire noise reducing system | Masami Nishikawa, Tokuzo Nakajima, Chieko Aoki, Hideaki Sugihara | 2004-06-29 |
| 6729373 | Tire noise reducing system | Tokuzo Nakajima, Masami Nishikawa, Chieko Aoki, Hideaki Sugihara | 2004-05-04 |
| 6726289 | Tire noise reducing system | Masami Nishikawa, Tokuzo Nakajima, Chieko Aoki, Hideaki Sugihara | 2004-04-27 |