Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11480080 | Muffler | Seiji Kondo, Katsuhiko Kainuma | 2022-10-25 |
| 11377990 | Exhaust pipe | Takeshi Osanai, Yoshiaki Kataoka, Hayato Tawada, Katsuhiko Kainuma | 2022-07-05 |
| 11261768 | Muffler | Hayato Tawada, Katsuhiko Kainuma | 2022-03-01 |