Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5093063 | Method of producing polyvinyl alcohol fibers | Masaharu Watanabe, Kenichi Tanimoto, Kazutaka Kooda, Naohiko Nagata, Tsunetoshi Matsuda | 1992-03-03 |
| 4971861 | Polyvinyl alcohol fiber and method of manufacture thereof | Masaharu Watanabe, Kenichi Tanimoto, Kazutaka Kooda, Naohiko Nagata, Tsunetoshi Matsuda | 1990-11-20 |