Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5355814 | Gasifier burner for powdered solid fuels and method for using the same | Kimiaki Utsunomiya, Hitoshi Takano, Keiji Fujita | 1994-10-18 |
| 5178667 | Dry process for refining zinc sulfide concentrates | Akihiko Akada, Hitoshi Takano, Takeshi Kusakabe, Masaru Takebayashi | 1993-01-12 |
| 5174746 | Method of operation of flash smelting furnace | Akihiko Akada, Yasuhiro Kondou | 1992-12-29 |
| 4848754 | Flash smelting furnace | Yasuo Ojima, Yasuhiro Kondo | 1989-07-18 |