Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857429 | Process of improving optical contact of patternwise powdery coating layer and phosphor screen provided therefore | Nobuaki Hayashi, Shoichi Uchino, Yoshifumi Tomita, Masahiro Nishizawa | 1989-08-15 |
| 4855200 | Fluorescent screens of color picture tubes and manufacturing method therefor | Yoshifumi Tomita, Masahiro Nishizawa | 1989-08-08 |
| 4815821 | Face plate for display | Hajime Morishita, Nobuaki Hayashi, Shoichi Uchino, Yoshifumi Tomita, Masahiro Nishizawa +1 more | 1989-03-28 |