Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12343778 | Die for ironing working and die module | Takuho KUMAGAI, Kenichi Takao, Ryozo Shiroishi, Naoya Matsumoto | 2025-07-01 |
| 12036597 | Jig for metal plastic working | Takuho KUMAGAI, Tomohiro Ogawa, Ryozo Shiroishi, Naoya Matsumoto | 2024-07-16 |
| 11745245 | Metallic worked articles | Takuho KUMAGAI, Ryozo Shiroishi, Naoya Matsumoto, Tomohiro Ogawa | 2023-09-05 |
| 10155293 | Diamond surface polishing method and apparatus for implementing same | Kenichi Takao, Ryozo Shiroishi | 2018-12-18 |
| 4806307 | Aluminum alloy with superior thermal neutron absorptivity | Yagoro Hirose, Yoshimitsu Miyagi, Kiko Hirose, Mitsuo Hino, Masayuki Harada +2 more | 1989-02-21 |