Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6974881 | Production method of 4,6-diaminoresorcin | Yukihiro Kumamoto, Masahiko Kusumoto, Hisato Itou, Hideki Mizuta | 2005-12-13 |
| 6828461 | Process for producing 1,5-diaminonaphthalene | Yukihiro Kumamoto, Hideki Mizuta, Yoriaki Matsuzaki | 2004-12-07 |
| 6359180 | Production method of 4,6-diaminoresorcin | Yukihiro Kumamoto, Masahiko Kusumoto, Hisato Itou, Hideki Mizuta | 2002-03-19 |
| 5872260 | High purity 1,3-dialkyl-2-imidazolidinone and preparation process of same | Hideki Mizuta, Teruyuki Nagata | 1999-02-16 |