Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7674518 | Polyvinyl alcohol film and polarizing film and polarizing plate using the same | Seiichirou Hayakawa, Yukari Nishimoto, Akihiko Chigami | 2010-03-09 |
| 7067575 | Water-soluble film of polyvinyl alcohol | Tomoyoshi Mizutani, Mitsuhiro Hasegawa, Hideki Oono | 2006-06-27 |
| 6759001 | Method for producing embossed poly(vinyl alcohol) film | Tomoyoshi Mizutani, Kenji Hasegawa, Manabu Miyato, Hideki Oono | 2004-07-06 |