Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6475445 | Calcium sulfide oxidation method and apparatus | Yoshihiko Tsuchiyama, Yuichi Fujioka, Toshihiko Setoguchi, Katsuhiko Shinoda, Kenji Tagashira +1 more | 2002-11-05 |
| 6425252 | Purging method, apparatus to be purged and purging apparatus | Akira Fujitaka | 2002-07-30 |