Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7393019 | Tube connection assembly | Hiroshi Yamaguchi, Keiji Ishiguro, Shigeo Ohi, Kazuyoshi Murase | 2008-07-01 |
| 4474605 | Process for refining high-chromium steels | Seiichi Masuda, Yoichi Umeda, Tohru Matsuo, Hidemasa Nakajima | 1984-10-02 |
| 4426224 | Lance for powder top-blow refining and process for decarburizing and refining steel by using the lance | Kaoru Shimme, Takeo Aoki | 1984-01-17 |