Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6034206 | Polyaryleneamines and a process for their production | Toshihide Yamamoto, Masakazu Nishiyama | 2000-03-07 |
| 5929281 | Process for producing heterocyclic aromatic amine or arylamine | Masakazu Nishiyama | 1999-07-27 |