Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5725925 | Packing material for refractory | Kenji Ichikawa, Kazushi Maruyama, Junichi Inoue | 1998-03-10 |
| 5154785 | Process for producing a zirconia refractory heating element | Katsuhiro Tabata, Masahiro Hayase, Hiroyuki Asakura, Kenji Mitsui | 1992-10-13 |
| 5073689 | Zirconia refractory heating element | Katsuhiro Tabata, Masahiro Hayase, Hiroyuki Asakura, Kenji Mitsui | 1991-12-17 |
| 4608087 | Heat-resistant inorganic composition | Shigeo Yoshino, Tadashi Zenbutsu | 1986-08-26 |
| 4435215 | Heat-resistant inorganic compositions | Shigeo Yoshino, Tadashi Zenbutsu, Michiyuki Irie | 1984-03-06 |
| 4282288 | Graphite refractory article having dense structure with low porosity | Shigeo Yoshino, Tadashi Zenbutsu, Miki Suma | 1981-08-04 |