Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9920390 | Method for preliminary treatment of molten iron | Yozo Iwaki, Shizuhiko Ikeno, Kochiro Ejima, Takeshi Ishii, Masanori Nishikori +11 more | 2018-03-20 |
| 6316106 | Filler sand for a ladle tap hole valve | Hideto Takasugi, Takeshi Ishii, Shinichi Akai, Akira Shirayama, Hirohisa Nakashima | 2001-11-13 |
| 6051514 | Sliding nozzle filler | Jun Ayama, Akira Ohashi, Hideto Takasugi, Akira Shirayama, Hirohisa Nakashima | 2000-04-18 |