Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7586687 | Projecting optical unit and projecting type image display apparatus therewith | Hiroki Yoshikawa, Tetsu Ohishi, Koji Hirata, Naoyuki Ogura | 2009-09-08 |
| 7553031 | Projection image display apparatus and projection optical unit to be used therein | Masahiko Yatsu, Koji Hirata | 2009-06-30 |
| 7551352 | Image display apparatus, as well as, Fresnel lens sheet and screen to be used therein | Tetsu Ohishi, Hiroki Yoshikawa, Koji Hirata, Masahiko Yatsu, Daisuke Imafuku | 2009-06-23 |
| 7535648 | Projection type image display | Hiroki Yoshikawa, Tetsu Ohishi, Koji Hirata, Naoyuki Ogura | 2009-05-19 |
| 7467872 | Projection optical unit and projection type video display device using the unit | Hiroki Yoshikawa, Tetsu Ohishi, Masahiko Yatsu, Koji Hirata | 2008-12-23 |
| 6917168 | Cathode ray tube device and a television set using the same | Souichi Sakurai, Sakae Watanabe | 2005-07-12 |
| 5491525 | Illumination unit for liquid crystal projection display apparatus and liquid crystal display apparatus having it used | Futoshi Yamasaki, Yoshio Ariki, Masaharu Deguchi, Takashi Kakuda, Takesuke Maruyama | 1996-02-13 |
| 4941719 | Light scanning system | Takesuke Maruyama, Masaharu Deguchi, Yoshihiko Noro, Yoshifumi Honma, Yoshio Ariki +1 more | 1990-07-17 |
| 4782356 | Automatic focusing apparatus | Kenji Sano, Hironobu Satoh, Takesuke Maruyama, Takashi Azumi | 1988-11-01 |
| 4740676 | Range finding automatic focusing system employing a rotatable transparent plate and a half-split light receiving element | Hironobu Satoh, Takesuke Maruyama, Takashi Azumi, Kenji Sano | 1988-04-26 |
| 4557567 | Lens system with plastic lenses compensating for temperature changes | Takashi Azumi, Takesuke Maruyama | 1985-12-10 |
| 4201933 | Electron gun structure for a pickup tube | Kyohei Fukuda | 1980-05-06 |