Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9896383 | High zirconia electrically fused cast refractory | Hiroshi Sugiyama, Itaru Hashimoto, Yasuo Misu | 2018-02-20 |
| 9751806 | High zirconia electrically fused cast refractory | Hiroshi Sugiyama, Itaru Hashimoto, Yasuo Misu | 2017-09-05 |
| 9475735 | High zirconia fused cast refractory | Hiroshi Sugiyama, Yasuo Misu, Itaru Hashimoto | 2016-10-25 |