Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4273577 | Blast-furnace operation method | Isao Fujita, Nobuyuki Imanishi, Ryo Watanabe, Takao Kawai | 1981-06-16 |
| 4257806 | Fired iron-ore pellets having macro pores and process for producing the same | Isao Fujita, Mamoru Onoda, Fumikazu Kawaguchi, Yoshimichi Takenaka | 1981-03-24 |
| 4231797 | Fired iron-ore pellets having macro pores | Isao Fujita, Mamoru Onoda, Fumikazu Kawaguchi, Yoshimichi Takenake | 1980-11-04 |