Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817172 | Exhaust purifying apparatus for an internal combustion engine and a failure prevention method therefor | — | 2004-11-16 |
| 6751949 | Exhaust emission control device of internal-combustion engine | Kazuhito Kawashima | 2004-06-22 |
| 6729123 | Exhaust purification device for intracylindrical injection-type spark-ignition internal combustion engine | Kazuhito Kawashima | 2004-05-04 |
| 6718756 | Exhaust gas purifier for use in internal combustion engine | Kojiro Okada, Osamu Nakayama, Kazuhito Kawashima | 2004-04-13 |
| 6711892 | Exhaust gas purifier for internal combustion engines | Kojiro Okada, Tomohiro Ohashi, Naoto Yamada, Kazuo Koga | 2004-03-30 |
| 6672051 | Exhaust emission purifying device for internal combustion engine | Kazuhito Kawashima, Takuya Okamoto, Osamu Nakayama | 2004-01-06 |