Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4991520 | Ignition burner apparatus for pulverized coal | Toshikazu Tsumura, Ryuichi Sugita, Ikuhisa Hamada, Akira Baba | 1991-02-12 |
| 4505232 | Boiler tube | Kenichi Usami, Seishin Kirihara, Hiroyuki Doi, Choichi Asano, Masayuki Sukekawa | 1985-03-19 |