Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5624680 | Hydroxysilyl-terminated polyoxyethylene compound, quaternary-salt-terminated block copolymer, and percutaneous absorption-promoting agent | Yu Nagase, Takao Aoyagi | 1997-04-29 |
| 5616317 | Polycationic polymer and polycationic microbicidal and algaecidal agent | Yu Nagase, Takao Aoyagi, Kazunori Tanaka, Kouichi Iwabuchi, Yoshihiro Konagai | 1997-04-01 |