Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7319439 | Image display device and projector | Junichi Nakamura, Takashi Nitta, Tsunemori Asahi | 2008-01-15 |
| 7234822 | Light propagation structure and optical display device of optical system, light propagation method of optical system, and display method of optical display device | Yoshitaka Itoh, Junichi Nakamura, Takashi Nitta, Tsunemori Asahi | 2007-06-26 |
| 7236285 | Light modulation device and optical display device, and light modulation method and image display method | Junichi Nakamura, Takashi Nitta, Tsunemori Asahi | 2007-06-26 |
| 7208874 | Transmitting type secondary electron surface and electron tube | Minoru Niigaki, Hirofumi Kan | 2007-04-24 |
| 7045957 | Polycrystal diamond thin film and photocathode and electron tube using the same | Minoru Niigaki, Hirofumi Kan | 2006-05-16 |
| 7030388 | Illuminant, and, electron beam detector, scanning electron microscope and mass spectroscope each including the same | Yasufumi Takagi, Minoru Niigaki, Minoru Kondo, Itaru Mizuno | 2006-04-18 |
| 6947025 | Lighting apparatus and projection type display, and driving method therefore | Hidehito Iisaka | 2005-09-20 |
| 6839178 | Method of producing a transmissive screen and the transmissive screen | Satoru Miyashita, Hiroshi Kiguchi, Hironori Hasei | 2005-01-04 |
| 6831341 | Photocathode having AlGaN layer with specified Mg content concentration | Hirofumi Kan, Minoru Niigaki, Masashi Ohta, Yasufumi Takagi | 2004-12-14 |
| 6621637 | Method for manufacturing transmission screen and transmission screen | Satoru Miyashita, Hiroshi Kiguchi, Hironori Hasei | 2003-09-16 |
| 6538624 | Head-mounted image display apparatus | Joji Karasawa, Shoichi Ishizawa, Yoko Miyazawa | 2003-03-25 |
| 5739797 | Head-mounted virtual image display device having switching means enabling user to select eye to view image | Joji Karasawa, Hiroshi Kamakura, Hiroyuki Shindo, Takeshi Furihata, Masafumi Sakaguchi | 1998-04-14 |
| 5739893 | Head-mounted image display apparatus | Joji Karasawa, Shoichi Ishizawa, Yoko Miyazawa | 1998-04-14 |
| 5510588 | Image intensifier apparatus | Hideki Suzuki | 1996-04-23 |
| 5440424 | Prism optical device and polarizing optical device | Jin-Jei Wu, Yoshitaka Itoh, Tomio Sonehara | 1995-08-08 |
| 5161040 | Optical system with aberration suppression and optical head utilizing the same | Osamu Yokoyama | 1992-11-03 |