Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6603590 | Optical modulation device and projector | Nobuo Watanabe, Hiromi Saito, Shigeo Toda | 2003-08-05 |
| 6558001 | Projector | Satoshi Yoshida | 2003-05-06 |
| RE38084 | Projector | Toshiaki Hashizume, Hisashi Iechika, Shinji Haba, Akitaka Yajima | 2003-04-22 |
| 6527393 | Illumination optical system and projector using same | — | 2003-03-04 |
| 6491397 | Illumination optical system and projector using the same | Hidemasa Yamakawa, Koichi Akiyama | 2002-12-10 |
| 6487175 | Control of power supply to subcribers in digital switch board with respect to data-communication calls | — | 2002-11-26 |
| 6373616 | Optical modulation device and projector | Nobuo Watanabe, Hiromi Saito, Shigeo Toda | 2002-04-16 |
| 6315417 | Projector | Akitaka Yajima, Jiro Ito | 2001-11-13 |
| 6286961 | Illuminating optical system and projection type display | — | 2001-09-11 |
| 6278500 | Liquid crystal device and projector display device having a specific relationship for the F-numbers of the illumination optical system | Akitaka Yajima, Takeshi Takizawa | 2001-08-21 |
| 6247817 | Projector | Shinji Haba, Akitaka Yajima, Toshiaki Hashizume, Hisashi Iechika | 2001-06-19 |
| 6195143 | Liquid crystal panel structure with micro-lens array and projector using the micro-lens array | — | 2001-02-27 |
| 6142634 | Projector | Shinji Haba, Akitaka Yajima, Toshiaki Hashizume, Hisashi Iechika | 2000-11-07 |
| 6141150 | Dichroic prism, prism unit, and projection display apparatus | Tomiyoshi Ushiyama, Akitaka Yajima | 2000-10-31 |
| 6018331 | Frame display control in an image display having a liquid crystal display panel | — | 2000-01-25 |
| 6000802 | Projection-type display apparatus | Toshiaki Hashizume, Hisashi Iechika, Shinji Haba, Akitaka Yajima | 1999-12-14 |
| 5978136 | Optical element, polarization illumination device, and projection display apparatus | Akitaka Yajima, Tomiyoshi Ushiyama | 1999-11-02 |
| 5865521 | Projection-type display apparatus | Toshiaki Hashizume, Hisashi Iechika, Shinji Haba, Akitaka Yajima | 1999-02-02 |
| D343345 | Portable electric hammer | Norio Nitta, Kazuhiro Segawa | 1994-01-18 |
| D337709 | Jig saw | Taiichi Kumasaka, Takayuki Suzuki | 1993-07-27 |
| D337711 | Portable electric drill | Kazuhiko Kitaguchi | 1993-07-27 |
| D335619 | Portable electric hammer | Norio Nitta, Mutsuo Harada | 1993-05-18 |
| D334522 | Portable electric saw | Kazumi Takeishi, Kazumi Tanaka | 1993-04-06 |
| D334329 | Portable pneumatic nailer | Kunio Yamamoto, Kaoru Ichikawa | 1993-03-30 |
| D330152 | Portable electric screw driver | Yuichi Sato, Atsushi Nakagawa | 1992-10-13 |