Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5744104 | Electrically heated catalytic converter for an engine | Kazuhiro Sakurai, Tohru Yoshinaga, Kiyohiko Watanabe | 1998-04-28 |
| 5579639 | Double walled exhaust pipe for an engine | Minoru Iwata, Kenichi Harada | 1996-12-03 |
| 5308090 | Spiral wound gasket | Eiichi Hamada, Suekichi Hangeishi, Mamoru Yashima, Takahisa Ueda, Keiji Okada +1 more | 1994-05-03 |
| 4513841 | Muffler for internal combustion engines | Suekiti Hangeisi, Keiji Itou | 1985-04-30 |