Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5827475 | Apparatus for removing an accretion from an uptake at the exit of metal producing furnace | Kiyoshi Fujiwara | 1998-10-27 |
| 5685892 | Metallurgical furnace installation for use in copper smelting process and method for charging anode scrap into furnace | Hiroaki Ikoma, Kiyoshi Fujiwara, Nobuhiro Oguma | 1997-11-11 |
| 5542651 | Melt discharging launder and metallurgical furnace installation using same | Hisao Kanazumi | 1996-08-06 |
| 5497978 | Apparatus for charging scrap into a converting furnace | Kiyoshi Fujiwara, Nobuhiro Oguma | 1996-03-12 |
| 5468279 | Method for water-granulating calcium ferrite slag | — | 1995-11-21 |
| 5441205 | Apparatus for water-granulating slag | Hisao Kanazumi, Kiyoshi Fujiwara | 1995-08-15 |