Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7939458 | Refractory brick | Ryosuke Nakamura, Hiroyuki Shikama, Hisashi Tomiya | 2011-05-10 |
| 7166551 | Monothilic refractory composition | Toshihiko Kaneshige, Yukiharu Tabuchi | 2007-01-23 |