Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7517478 | Process for preparing polyvinyl alcohol film and polarizing film using the same | Kenji Hasegawa | 2009-04-14 |
| 7204443 | Roll of polyvinyl alcohol film and polarizing film prepared therefrom | Hidefumi Niki | 2007-04-17 |