Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4897179 | Method of producing reduced iron and light oil from ion ore and heavy oil | Kenji Mori, Katsuhiko Tsuzura, Ryo Watanabe, Takehiko Ashie, Yoshifumi Kameoka +2 more | 1990-01-30 |
| 4678508 | Method for fluidized bed reduction of iron ore | Osamu Saeki, Kenji Mori, Ryo Watanabe, Katsufumi Shinohara, Takehiko Ashie +1 more | 1987-07-07 |
| 4372779 | Iron ore pellets containing coarse ore particles | Takeshi Sugiyama, Shoji Shirouchi, Osamu Tsuchiya, Atsuko Yamashita, Isao Fujita +1 more | 1983-02-08 |
| 4367091 | Fired iron-ore pellets having at least two different precipitated slag phases and process for producing the same | Isao Fujita, Takeshi Sugiyama, Shoji Shirouchi | 1983-01-04 |
| 4356027 | Iron ore pellets containing magnesium oxide | Takeshi Sugiyama, Shoji Shirouchi, Fumikazu Kawaguchi, Isao Fujita | 1982-10-26 |
| 4268303 | Direct reduction process for producing reduced iron | Dentaro Kaneko, Yoshio Kimura, Yutaka Inada, Masahiro Tomita | 1981-05-19 |
| 4257806 | Fired iron-ore pellets having macro pores and process for producing the same | Isao Fujita, Fumikazu Kawaguchi, Yoshimichi Takenaka, Tadao Tsutaya | 1981-03-24 |
| 4231797 | Fired iron-ore pellets having macro pores | Isao Fujita, Fumikazu Kawaguchi, Yoshimichi Takenake, Tadao Tsutaya | 1980-11-04 |