Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6974881 | Production method of 4,6-diaminoresorcin | Masahiko Kusumoto, Hisato Itou, Hideki Mizuta, Masazumi Takaoka | 2005-12-13 |
| 6828461 | Process for producing 1,5-diaminonaphthalene | Masazumi Takaoka, Hideki Mizuta, Yoriaki Matsuzaki | 2004-12-07 |
| 6359180 | Production method of 4,6-diaminoresorcin | Masahiko Kusumoto, Hisato Itou, Hideki Mizuta, Masazumi Takaoka | 2002-03-19 |