Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5086020 | High zirconia fused cast refractory | Toshihiro Ishino, Kouzou Sakai | 1992-02-04 |
| 4623017 | Joint structure for a tube and a header | Noriyuki Oda, Keiji Muramatsu | 1986-11-18 |
| 4540184 | Sand-filled sealing structure between at least one tube and a tube support plate | Kunio Takahashi, Noriyuki Oda, Keizi Muramatsu | 1985-09-10 |