Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE48309 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Kazuhiro Fujita, Nobuo Sakuma | 2020-11-17 |
| 9983531 | Moving-member detecting device and image forming apparatus | Koichi Kudo, Koji Masuda, Hiroyoshi Funato, Takeshi Ueda, Yasuhiro Nihei | 2018-05-29 |
| 9946144 | Projection optical system and image projecting apparatus | Issei Abe, Kazuhiro Fujita | 2018-04-17 |
| 9228825 | Positional change measurement device, positional change measurement method, and image forming apparatus | Koji Masuda, Yasuhiro Nihei, Takeshi Ueda, Koichi Kudo, Taku Amada +2 more | 2016-01-05 |
| RE45728 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Kazuhiro Fujita, Nobuo Sakuma | 2015-10-06 |
| RE45258 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Kazuhiro Fujita, Nobuo Sakuma | 2014-11-25 |
| 8777421 | Projection optical system | Kazuhiro Fujita, Issei Abe, Akihiro Yamakage, Osamu Nagase, Yoshitsugu Kohno | 2014-07-15 |
| 8610968 | Document illuminating system and image reader including the same | Nobuaki Ono, Yasuo Sakurai, Yasunobu Youda, Kazuya Miyagaki, Masahiro Itoh | 2013-12-17 |
| 8529070 | Projection optical apparatus | Kazuhiro Fujita, Issei Abe, Akihiro Yamakage, Osamu Nagase, Yoshitsugu Kohno | 2013-09-10 |
| 8416471 | Document illuminating system and image reader including the same | Nobuaki Ono, Yasuo Sakurai, Yasunobu Youda, Kazuya Miyagaki, Masahiro Itoh | 2013-04-09 |
| 8162485 | Intermediate image formation optical system, image formation device, and methods thereof | Takanobu Osaka, Yasuyuki Takiguchi, Toshiaki Tokita, Kazuhiro Fujita, Kazuya Miyagaki +1 more | 2012-04-24 |
| 8128238 | Projection optical system and image displaying apparatus | Kazuhiro Fujita, Issei Abe | 2012-03-06 |
| 8025415 | Projection optical system and image projecting apparatus | Issei Abe, Kazuhiro Fujita | 2011-09-27 |
| 7946717 | Projection optical system and image projecting apparatus | Issei Abe, Kazuhiro Fujita | 2011-05-24 |
| 7938545 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Kazuhiro Fujita, Nobuo Sakuma | 2011-05-10 |
| 7922341 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Kazuhiro Fujita, Nobuo Sakuma | 2011-04-12 |
| 7911704 | Projection optical system and image display apparatus | Issei Abe, Kazuhiro Fujita | 2011-03-22 |
| 7889224 | Optical path switching device, optical scanning device, and image forming apparatus | Toshimichi Hagiya, Kazuya Miyagaki, Toshiaki Tokita | 2011-02-15 |
| 7857458 | Image display device and image projection device | Kazuhiro Fujita, Yasuyuki Takiguchi, Toshiaki Tokita, Toshiharu Murai, Hiroyuki Sugimoto +2 more | 2010-12-28 |
| 7753531 | Image display apparatus and projection optical system | Kazuhiro Fujita, Takanobu Osaka, Kazuya Miyagaki, Masanori Kobayashi, Hiroyuki Sugimoto +3 more | 2010-07-13 |
| 7646536 | Reflective screen and display system | Kazuhiro Fujita, Issei Abe | 2010-01-12 |
| 7637621 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Kazuhiro Fujita, Nobuo Sakuma | 2009-12-29 |
| 7637618 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Kazuhiro Fujita, Nobuo Sakuma | 2009-12-29 |
| 7631975 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Kazuhiro Fujita, Nobuo Sakuma | 2009-12-15 |
| 7564508 | Light path shift device and image display device | Hiroyuki Sugimoto, Toshiaki Tokita, Kazuhiro Fujita, Toshiharu Murai, Yasuyuki Takiguchi +2 more | 2009-07-21 |