Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859560 | Toner for use in electrophotography | Tadashi Nakamura, Yaosuo Kitabatake, Kazuya Maeda | 1989-08-22 |
| 4851741 | Electron gun for color picture tube | Shoji Shirai, Masaaki Yamauchi, Masayoshi Furuyama, Kazunari Noguchi, Sakae Ishii | 1989-07-25 |
| 4833365 | Electron gun structure for converging electron beams | Shoji Shirai, Hidemasa Komoro, Masakazu Fukushima, Kazuo Majima | 1989-05-23 |
| 4825120 | Electron gun apparatus with auxiliary electrodes for a color cathode-ray tube | — | 1989-04-25 |