Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8411327 | Data processing device, image forming device, system, and a computer-readable recording medium for determining whether or not image is properly formed on recording medium | Hirofumi Ishii, Tohru Yamano, Yosuke Takebe, Hiroshi Yoshihara | 2013-04-02 |
| 8403498 | Projector, and its filter renewal control method | Mitsuru Kotaka, Yoshinobu Nakajima, Toshiyuki Noguchi, Yoshinari Matsumoto, Kenji Kunitake | 2013-03-26 |
| 8292980 | Dust capture device and projection type image display apparatus | Shingo Oidate, Masato Tanaka, Mitsuru Kotaka | 2012-10-23 |
| 8226244 | Image display device | Kazunori Tanabe, Shuu Nanba | 2012-07-24 |
| 8172406 | Powder dust capture device and projection type image display device | — | 2012-05-08 |
| 8024622 | Abnormality detection frequency set when it is indicated that abnormality will occur | Kazuhiko NARUSHIMA, Makoto Hashimoto, Ken Ikeda, Masafumi Ono, Hinki Ryu +1 more | 2011-09-20 |
| 7365721 | Projection display | Takaaki Tanaka, Atsushi Hatakeyama | 2008-04-29 |
| 6943752 | Presentation system, a display device, and a program | Junji Masumoto, Hiroshi Miyai | 2005-09-13 |
| 6771419 | Rear projection type image display unit | Hiroshi Miyai, Hiroshi Yamaguchi, Kenichi Ikeda | 2004-08-03 |
| RE38488 | Optical system including a reflecting polarizer for a rear projection picture display apparatus | — | 2004-04-06 |
| 6698895 | Projection image display | Atsushi Hatakeyama, Shu Namba | 2004-03-02 |
| 6666558 | Projection image display | Atsushi Hatakeyama, Hitoshi Noda | 2003-12-23 |
| 6665122 | Projection-type image display apparatus | — | 2003-12-16 |
| 6628248 | Image display apparatus and method for compensating display image of image display apparatus | Junji Masumoto, Hitoshi Noda, Atsushi Hatakeyama, Hiroshi Miyai | 2003-09-30 |
| 6568811 | Color image display device and projection-type image display apparatus | Hitoshi Noda, Hiroaki Sato | 2003-05-27 |
| 6511184 | Color image display apparatus | Hiroshi Miyai, Hitoshi Noda, Atsushi Hatakeyama | 2003-01-28 |
| 6508554 | Projection-type image display apparatus | Atsushi Hatakeyama | 2003-01-21 |
| 6373629 | Polarized light illuminator and projecting type image display | Yoshihiro Masumoto | 2002-04-16 |
| 6042236 | Projection type video image display device | Atsushi Hatakeyama | 2000-03-28 |
| 5907373 | Projection type color image display device | — | 1999-05-25 |
| 5777695 | Lighting device transformed in the direction of polarization and projection type image display device using the same | — | 1998-07-07 |
| 5764310 | Projection type image display apparatus | — | 1998-06-09 |
| 5722753 | Lamp device of liquid-crystal projection apparatus | Takehiro Okada, Yaoki Maeda, Shigeru Aruga, Tadashi Ohira, Tsuguhide Ioki | 1998-03-03 |
| 5624172 | Projection type image display apparatus | — | 1997-04-29 |
| 5557343 | Optical system including a reflecting polarizer for a rear projection picture display apparatus | — | 1996-09-17 |