Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8450228 | Refractory, method for manufacturing refractory, and refractory raw material | Katsumi Morikawa, Koichi Haren, Joki Yoshitomi, Keisuke Asano | 2013-05-28 |
| 8182599 | Carbon-containing refractory, production method thereof, and pitch-containing refractory raw material | Hiroyuki Fuchimoto, Toshihiro Suruga, Jyouki Yoshitomi, Keisuke Asano | 2012-05-22 |
| 8093169 | High-durability sleeve bricks | Masato Tanaka, Eiichiro Hatae, Joki Yoshitomi | 2012-01-10 |