Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6725832 | EGR control apparatus for internal combustion engine | Jin Yokoyama | 2004-04-27 |
| 6688279 | Compression-ignition internal combustion engine | Naoya Ishikawa, Teruo Nakada, Masato Honda, Tetsuya Honma, Jin Yokoyama +1 more | 2004-02-10 |