Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5508025 | Naphthalenemethylenemalonic diesters, and UV absorbers and cosmetic compositions containing the diesters | Masahide Hoshino, Mitsuru Sugiyama, Akira Kawamata, Genji Imokawa | 1996-04-16 |
| 5191121 | Aroyl ketone derivative, UV ray absorber comprising the same, and cosmetic composition containing the same | Shinji Yamada, Akira Kawamata, Genji Imokawa, Shinichi Masuda, Masakazu Yamaguchi +1 more | 1993-03-02 |
| 5146002 | Aroyl ketone derivative, UV ray absorber comprising the same, and cosmetic composition containing the same | Shinji Yamada, Akira Kawamata, Genji Imokawa, Shinichi Masuda, Masakazu Yamaguchi +1 more | 1992-09-08 |