Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4950771 | Dihydroxy compound | Mitsuhito Masumoto, Toshiaki Asoh, Youichirou Ezaki | 1990-08-21 |
| 4924025 | Novel dihydroxy compound | Mitsuhiko Masumoto, Toshiaki Asoh, Youichirou Ezaki | 1990-05-08 |