Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7976258 | Screw and screw fastening structure | Tetsuya Asai, Yoshihiro Takitani, Takehiko Egawa | 2011-07-12 |
| 6605166 | Method for manufacturing high strength bolt excellent in resistance to delayed fracture and to relaxation | Seiichi Koike, Mitsuo Takashima, Yuichi Namimura, Nobuhiko Ibaraki | 2003-08-12 |