Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6336967 | Method for processing chromium oxide-containing substances in large quantities, method for utilizing the processed substances, and products comprising the processed substances | Hisahiro Matsunaga, Masato Kumagai, Yasuo Kishimoto, Toshikazu Sakuraya | 2002-01-08 |
| 6334885 | Method of solidifying steel-making slag and material produced by the method | Yasumasa Fukushima, Hisahiro Matsunaga, Makiko Nakagawa, Masato Takagi, Masato Kumagai | 2002-01-01 |