Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698740 | Hole-transport material | Tadashi Ogawa, Yasumasa Suda | 1997-12-16 |
| 5681664 | Hole-transporting material and use thereof | Michiko Tamano, Toshikazu Onikubo, Toshiyuki Uemura, Tadashi Ogawa | 1997-10-28 |