Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5872423 | Color cathode ray tube having an improved first grid electrode | Shinichi Ishinagawa, Sakae Ishii | 1999-02-16 |
| 4634635 | Black ornament | Takashi Fujita, Yoshiharu Ochi, Masahiko Hirose, Katsutarou Ichihara, Takashi Ishigami | 1987-01-06 |