Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888523 | Driving circuit of thin membrane EL display apparatus | Yosihide Fujioka, Shigeyuki Harada, Toshihiro Ohba | 1989-12-19 |
| 4864182 | Driving circuit for thin film EL display device | Yoshihide Fujioka, Shigeyuki Harada, Toshihiro Ohba | 1989-09-05 |