Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5795992 | Method of testing durability of exhaust gas purification device | Toshio Tanahashi, Masakatsu Sanada, Hiroshi Hirayama, Kazuaki Sobue, Tsuneo Higashi +4 more | 1998-08-18 |