Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9085664 | Polyvinyl alcohol film, and polarizing film and polarizing plate using the same | Hideki Oono, Seiichirou Hayakawa | 2015-07-21 |
| 7674518 | Polyvinyl alcohol film and polarizing film and polarizing plate using the same | Seiichirou Hayakawa, Syuichi Kitamura, Yukari Nishimoto | 2010-03-09 |