Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857106 | Method for controlling operation of a blast furnace | Motohiro SHIBATA, Takaharu Ishii, Masaaki Sakurai | 1989-08-15 |
| 4844737 | Method for operating a blast furnance by blowing pulverized coal | Yotaro Oono, Hiroshi Saito, Takehiko Miyamoto, Hitoshi Kawada, Masahiro Matsuura | 1989-07-04 |