Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6162864 | Polyvinyl alcohol | Masao Tanihara | 2000-12-19 |
| 5880216 | Polyvinyl alcohol and gel containing the same | Masao Tanihara | 1999-03-09 |
| 5679371 | Wound dressing | Masao Tanihara, Hisao Kinoshita | 1997-10-21 |
| 5238995 | Polyvinyl alcohol fiber | Akitsugu Akiyama, Toshiaki Sato, Hirofumi Sano, Akio Ohmory | 1993-08-24 |
| 5187226 | Vinyl alcohol polymer | Mikiharu Kamachi, Tohei Yamamoto, Toshiaki Sato | 1993-02-16 |