Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665264 | Submerged nozzle mounting/dismounting apparatus | Mitsukuni Sato, Kenji Yamamoto, Koichi Ozawa, Taizo Sera, Jun Kubota | 1997-09-09 |
| 5645793 | Cartridge handling hand of a cartridge system sliding valve apparatus for a molten metal vessel | Kenji Yamamoto, Mototsuga Osada, Shuichi Aoyama | 1997-07-08 |