Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5843204 | Method for recycling iron and steel industry waste | Yoshitaka Ishikawa, Susumu Ide, Toshio Matsuoka, Hiroshi Koide, Shigeru Morishita +1 more | 1998-12-01 |
| 5139567 | Process for recovering valuable metals from a dust containing zinc | Toshio Matsuoka, Yukio Koyabu | 1992-08-18 |
| 5123631 | Method of and apparatus for continuously discharging molten metal and slag | Toshio Matsuoka, Yukio Koyabu | 1992-06-23 |
| 4824479 | Method for producing a carbonaceous solid reductant for direct reduction of iron ore | Toshio Matsuoka, Seiji Sugimori, Yukio Koyabu | 1989-04-25 |
| 4612041 | Process for recovering valuable metals from an iron dust containing a higher content of zinc | Toshio Matsuoka | 1986-09-16 |
| 4595574 | Method for recovering zinc from substances containing a zinc compound | Toshio Matsuoka, Yukio Koyabu, Tadamitu Nagayasu, Seiji Sugimori | 1986-06-17 |
| 4547219 | Method of reducing iron ore using petroleum coke | Toshio Matsuoka, Seiji Sugimori | 1985-10-15 |
| 4409022 | Method of producing low-sulfur, reduced, iron ore pellets | — | 1983-10-11 |