Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4666548 | Process for making fluorescent display device | Shigeo Itoh, Mikio Yokoyama, Takeshi Tonegawa | 1987-05-19 |
| 4449949 | Method of manufacturing a flat-type fluorescent display tube | Atsushi Nishimuro, Noriyoshi Fukuda | 1984-05-22 |
| 4382979 | Method of manufacturing a fluorescent display apparatus | Kazunori Tanaka, Hitoshi Toki, Hisashi Miyazawa | 1983-05-10 |
| 4383164 | Method of manufacturing a control grid for fluorescent display tube | — | 1983-05-10 |