Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D499741 | Selective portions of a internal combustion engine | Masahiro Aketa, Yuzo Umeda, Hiroyuki Anami | 2004-12-14 |
| D494191 | Internal combustion engine | Masahiro Aketa, Yuzo Umeda, Hiroyuki Anami | 2004-08-10 |
| 6679220 | Multi-cylinder engine | Yasunori Shiraishi, Masahiro Aketa, Makoto Watanabe | 2004-01-20 |