Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5846344 | Spring steel of high strength and high corrosion resistance | Yasunobu Kawaguchi, Kan Momozaki, Takenori Nakayama, Shigeaki Miyauchi, Yoshinori Yamamoto +1 more | 1998-12-08 |
| 5776267 | Spring steel with excellent resistance to hydrogen embrittlement and fatigue | Shigenobu Nanba, Hiroshi Yaguchi, Nobuhiko Ibaraki, Takenori Nakayama, Takashi Iwata +3 more | 1998-07-07 |
| 5508002 | Spring steel of high strength and high corrosion resistance | Yasunobu Kawaguchi, Kan Momozaki, Takenori Nakayama, Shigeaki Miyauchi, Yoshinori Yamamoto +1 more | 1996-04-16 |
| 5286312 | High-strength spring steel | Masao Toyama, Sinichi Ohnishi, Takahiko Nagamatsu, Takenori Nakayama | 1994-02-15 |