Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10518498 | Packaging bag, and method using same for storing polyvinyl alcohol-based resin that contains modified group having active hydrogen | Hirosato Takahashi, Tomoyuki Fujii | 2019-12-31 |
| 4687295 | Optical fiber having polymethacrylate core and fluoro-copolymer cladding | Toshio Koishi, Isao Tanaka, Takashi Yasumura | 1987-08-18 |