Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE40251 | Optical element, polarization illumination device, and projector | Yasunori Ogawa, Akitaka Yajima | 2008-04-22 |
| RE39859 | Dichroic prism, prism unit, and projection display apparatus | Akitaka Yajima, Yasunori Ogawa | 2007-09-25 |
| 7126648 | Liquid crystal projector comprising a plurality of light shielding members fixed between the lens array and the polarized light generator | Makoto Fuse | 2006-10-24 |
| RE39243 | Optical element, polarization illumination device, and projector | Yasunori Ogawa, Akitaka Yajima | 2006-08-22 |
| 7006004 | Light-source lamp unit, light-source device and projection-type display apparatus | Kiyoshi Miyashita, Kazuto Shinohara, Shinji Haba, Akitaka Yajima | 2006-02-28 |
| 6994438 | Optical component casing, optical device and projector | Taisuke Uehara, Shohei Fujisawa, Hirotatsu Okubo | 2006-02-07 |
| 6979960 | Circuit for driving light source, projector, method for controlling lighting of light source, and computer readable program for executing the same | Kazuo Okawa | 2005-12-27 |
| 6805450 | Projector | Kazuhiro Nishida | 2004-10-19 |
| 6690282 | Light-source lamp unit, light-source device and projection-type display apparatus | Kiyoshi Miyashita, Kazuto Shinohara, Shinji Haba, Akitaka Yajima | 2004-02-10 |
| 6637886 | Projection display device | Akitaka Yajima | 2003-10-28 |
| 6612702 | Projection display device | Akitaka Yajima | 2003-09-02 |
| 6556256 | Projector and prism used therein | Hisamaro Kato, Kazuhiro Nishida, Takeshi Takizawa | 2003-04-29 |
| 6547401 | Projector | Kazuhiro Nishida | 2003-04-15 |
| 6443576 | Projector | Kazuhiro Nishida | 2002-09-03 |
| 6371617 | Projector | Kazuhiro Nishida | 2002-04-16 |
| 6268799 | Light-source lamp unit, light-source device and projection-type display apparatus and method of use | Kiyoshi Miyashita, Kazuto Shinohara, Shinji Haba, Akitaka Yajima | 2001-07-31 |
| 6141150 | Dichroic prism, prism unit, and projection display apparatus | Akitaka Yajima, Yasunori Ogawa | 2000-10-31 |
| 6092901 | Polarizing illumination device and projection display device | Toshiaki Hashizume, Hisashi Iechika | 2000-07-25 |
| 6084714 | Polarizing illumination device and projection display device | Akitaka Yajima | 2000-07-04 |
| D420455 | Replacement lamp for projector | Shinji Haba, Akitaka Yajima | 2000-02-08 |
| 5978136 | Optical element, polarization illumination device, and projection display apparatus | Yasunori Ogawa, Akitaka Yajima | 1999-11-02 |
| 5909944 | Projection-type display apparatus | Akitaka Yajima, Motoyuki Fujimori, Mutsuya Furuhata, Terunaga Koide, Toshiaki Hashizume +3 more | 1999-06-08 |
| 5743610 | Projection-type display apparatus | Akitaka Yajima, Motoyuki Fujimori, Mutsuya Furuhata, Terunaga Koide, Toshiaki Hashizume +3 more | 1998-04-28 |