Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5129268 | Method of measuring average particle size of granular material | Mitsuaki Uesugi, Masami Harayama, Kazumi Ota, Hiroyuki Shibuya | 1992-07-14 |
| 4927457 | Method of manufacturing low carbon ferro-chromium | Kazumi Ohta, Hisao Doyama, Yutaka Yano | 1990-05-22 |