Issued Patents All Time
Showing 51–75 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7489447 | Optical condenser device | Yujin Zheng, Hirofumi Miyajima | 2009-02-10 |
| 7486710 | Semiconductor laser device and method of manufacturing the same | Hirofumi Miyajima, Nobuo Watanabe | 2009-02-03 |
| 7466023 | Semiconductor light emitting device and plant cultivating system | Takayoshi Honma, Hiroshi Tsuchiya | 2008-12-16 |
| 7447248 | Semiconductor laser element and semiconductor laser element array | Hirofumi Miyajima, Akiyoshi Watanabe | 2008-11-04 |
| 7424044 | Semiconductor laser device | Yujin Zheng | 2008-09-09 |
| 7372877 | Fiber laser unit | Akira Shirakawa, Kenichi Ueda, Hirofumi Miyajima | 2008-05-13 |
| 7208874 | Transmitting type secondary electron surface and electron tube | Minoru Niigaki, Shoichi Uchiyama | 2007-04-24 |
| 7045957 | Polycrystal diamond thin film and photocathode and electron tube using the same | Minoru Niigaki, Shoichi Uchiyama | 2006-05-16 |
| 6950449 | Passively Q-switched laser | Hiroshi Sakai, Akihiro Sone, Takunori Taira | 2005-09-27 |
| 6931047 | Laser light source | Akihiro Sone, Hiroshi Sakai, Takunori Taira, Nicolaie Pavel, Voicu Lupei | 2005-08-16 |
| 6920164 | Semiconductor laser device | Masayuki Saitoh | 2005-07-19 |
| 6917058 | Semiconductor photocathode | Minoru Niigaki, Toru Hirohata, Kuniyoshi Mori | 2005-07-12 |
| 6895026 | Heat sink and semiconductor laser apparatus and semiconductor laser stack apparatus using the same | Hirofumi Miyajima, Toshio Naitoh, Hirokazu Ohta, Takeshi Kanzaki | 2005-05-17 |
| 6831341 | Photocathode having AlGaN layer with specified Mg content concentration | Minoru Niigaki, Masashi Ohta, Yasufumi Takagi, Shoichi Uchiyama | 2004-12-14 |
| 6804275 | Heat sink and semiconductor laser apparatus and semiconductor laser stack apparatus using the same | Hirofumi Miyajima | 2004-10-12 |
| 6563264 | Photocathode and electron tube | Minoru Niigaki, Toru Hirohata, Tomoko Mochizuki | 2003-05-13 |
| 5986387 | Transmission type electron multiplier and electron tube provided | Minoru Niigaki, Toru Hirohata, Masami Yamada | 1999-11-16 |
| 5982094 | Electron tube with polycrystalline diamond photocathode | Minoru Niigaki, Toru Hirohata, Masami Yamada | 1999-11-09 |
| 5959400 | Electron tube having a diamond field emitter | Minoru Niigaki, Toru Hirohata, Masami Yamada | 1999-09-28 |
| 5872804 | Solid-state laser amplifier | Yasukazu Izawa, Masanobu Yamanaka, Hiromitsu Kiriyama, Takuji Yoshida, Sadao Nakai +1 more | 1999-02-16 |
| 5109358 | Optical flip-flop circuit | Yoshihiko Mizushima, Kazutoshi Nakajima, Toru Hirohata, Takashi Iida, Yoshihisa Warashina +1 more | 1992-04-28 |
| 5068815 | Optical full adder | Yoshihiko Mizushima, Kazutoshi Nakajima, Toru Hirohata, Takashi Iida, Yoshihisa Warashina +2 more | 1991-11-26 |
| 5051573 | Optical logic operation system | Yoshihiko Mizushima, Kazutoshi Nakajima, Toru Hirohata, Takashi Iida, Yoshihisa Warashina +1 more | 1991-09-24 |
| 5034921 | High speed optical memory circuit | Kazutoshi Nakajima, Kenichi Sugimoto, Yoshihiko Mizushima, Takashi Iida, Yoshihisa Warashina +1 more | 1991-07-23 |
| 4875093 | Ultrafast continuous imaging apparatus | Musubu Koishi, Yoshihiko Mizushima | 1989-10-17 |