Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6959916 | Valve and manufacturing method thereof | Mitsuo Chigasaki, Shizuo Matsushita, Jiro Kuniya, Yoshihisa Kiyotoki, Akira Sakamoto +1 more | 2005-11-01 |
| 5633094 | Valve having facing layers of co-free Ni-base Alloy | Shin Kumagai, Masato Koshiishi, Yositeru Chiba | 1997-05-27 |