Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6322747 | High-strength spring steel | Tatsuo Fukuzumi, Hidenori Hiromatsu, Ryo Hara | 2001-11-27 |
| 5475897 | Car door hinge | Katsuo Suzuki, Kouichi Kato, Tomoyuki Asari | 1995-12-19 |