Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6655026 | Production process for connecting rod for internal combustion engine | Zenji Iida, Shigeki Muroga, Seiichi Koike | 2003-12-02 |
| 6605166 | Method for manufacturing high strength bolt excellent in resistance to delayed fracture and to relaxation | Seiichi Koike, Katsuhiro Tsukiyama, Yuichi Namimura, Nobuhiko Ibaraki | 2003-08-12 |
| 6391124 | Non-heat treated, soft-nitrided steel parts | Hitoshi Matsumoto, Yoshihiko Kamada, Mitsuo Uno, Masato Kurita, Seiichi Koike | 2002-05-21 |
| 5901679 | Engine for vehicle | Shigekazu Tanaka, Takashi Taguchi, Shigemasa Kajiwara, Masashi Murata, Atsushi Iwamoto +4 more | 1999-05-11 |