Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6718756 | Exhaust gas purifier for use in internal combustion engine | Osamu Nakayama, Yasuki Tamura, Kazuhito Kawashima | 2004-04-13 |
| 6711892 | Exhaust gas purifier for internal combustion engines | Yasuki Tamura, Tomohiro Ohashi, Naoto Yamada, Kazuo Koga | 2004-03-30 |