Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5334086 | Apparatus for high voltage treatment of cathode ray tube | Wataru Imanishi, Yoshihisa Nakajima, Masaaki Kinoshita | 1994-08-02 |
| 5252098 | Method and apparatus for high voltage treatment of cathode ray tube | Wataru Imanishi, Yoshihisa Nakajima, Maasaki Kinoshita | 1993-10-12 |
| 5122707 | Cathode in a cathode ray tube | Hisao Nakanishi, Toyokazu Kamata, 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 | Toyokazu Kamata, Keiji Fukuyama, Masato Saito, Keiji Watanabe | 1991-05-14 |
| 4897574 | Hot cathode in wire form | Masato Saito, Keiji Fukuyama, Masako Ishida, Keiji Watanabe, Toyokazu Kamata +1 more | 1990-01-30 |
| 4864187 | Cathode for electron tube and manufacturing method thereof | Toyokazu Kamata, Keiji Fukuyama, Masato Saito, Keiji Watanabe | 1989-09-05 |
| 4797593 | Cathode for electron tube | Masato Saito, Keiji Fukuyama, Masako Ishida, Keiji Watanabe, Toyokazu Kamata | 1989-01-10 |