Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6479011 | Method of scrapping furnace bottom section of blast furnace | Masao Fujita, Mitsuru Kiguchi, Hiroyuki Yasuhara, Yasuo Ochiai | 2002-11-12 |
| 6403021 | Method of constructing a blast furnace body and lifting transfer apparatus | Masao Fujita | 2002-06-11 |