Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122707 | Cathode in a cathode ray tube | Hisao Nakanishi, Kinjiro Sano, Keiji Watanabe, Masato Saito, Ryo Suzuki +2 more | 1992-06-16 |
| 5118984 | Electron tube cathode | Masato Saito, Ryo Suzuki, Keiji Fukuyama, Takuya Ohira, Keiji Watanabe +3 more | 1992-06-02 |
| 5015497 | Cathode for electron tube and manufacturing method thereof | Kinjiro Sano, Keiji Fukuyama, Masato Saito, Keiji Watanabe | 1991-05-14 |
| 4897574 | Hot cathode in wire form | Masato Saito, Keiji Fukuyama, Masako Ishida, Keiji Watanabe, Kinjiro Sano +1 more | 1990-01-30 |
| 4864187 | Cathode for electron tube and manufacturing method thereof | Kinjiro Sano, Keiji Fukuyama, Masato Saito, Keiji Watanabe | 1989-09-05 |
| 4797593 | Cathode for electron tube | Masato Saito, Keiji Fukuyama, Masako Ishida, Keiji Watanabe, Kinjiro Sano | 1989-01-10 |