Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7189488 | Polyimide precursor, manufacturing method thereof, and resin composition using polyimide precursor | Toshio Yamanaka, Koji Okada | 2007-03-13 |
| 7141614 | Photosensitive resin composition and photosensitive films and laminates made by using the same | Koji Okada, Toshio Yamanaka | 2006-11-28 |