Issued Patents All Time
Showing 51–75 of 89 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778341 | Method for manufacturing light-selective prism | Yuji Takado, Takeshi Takezawa | 2004-08-17 |
| 6702443 | Projector | Takeshi Takezawa, Motoyuki Fujimori | 2004-03-09 |
| 6690521 | Light-selective prism, projection display apparatus using the same, and method of manufacturing light-selective prism | Masami Murata | 2004-02-10 |
| 6633435 | Illumination optical system and projector comprising the same | Koichi Akiyama | 2003-10-14 |
| RE38225 | Projection display and illuminating optical system for it | Yoshitaka Itoh | 2003-08-19 |
| RE38084 | Projector | Hisashi Iechika, Yasunori Ogawa, Shinji Haba, Akitaka Yajima | 2003-04-22 |
| 6536901 | Projector | Takeshi Takezawa, Motoyuki Fujimori | 2003-03-25 |
| 6523958 | Optical component and projector using the same | Takeshi Takezawa | 2003-02-25 |
| 6471358 | Lighting device and projector | Yoshitaka Itoh | 2002-10-29 |
| 6470723 | Apparatus for manufacturing internal grooved tube | Tetsuya Sumitomo, Koji Yamamoto | 2002-10-29 |
| 6411449 | Light-selective prism, projection display apparatus using the same, and method of manufacturing light-selective prism | Masami Murata | 2002-06-25 |
| 6394607 | Polarized light separation device, method of fabricating the same and projection display apparatus using the polarized light separation device | Yoshitaka Itoh, Akitaka Yajima | 2002-05-28 |
| 6375328 | Optical modulation element and projector | Shinji Haba, Motoyuki Fujimori | 2002-04-23 |
| 6342971 | Projector using a light-selective prism | Masami Murata | 2002-01-29 |
| 6340050 | Internally grooved heat exchanger pipe and metal bar working roll for internally grooved heat exchanger pipes | Yasutoshi Mori, Kouzi Yamamoto, Kenzi Nakamizo | 2002-01-22 |
| 6273569 | Illuminating optical system and projector | Hisashi Iechika | 2001-08-14 |
| 6247817 | Projector | Yasunori Ogawa, Shinji Haba, Akitaka Yajima, Hisashi Iechika | 2001-06-19 |
| 6172815 | Dichroic prism and projection display apparatus | Akitaka Yajima | 2001-01-09 |
| 6155686 | Projection display device | — | 2000-12-05 |
| 6154320 | Polarizing conversion device, polarizing illuminations device, and display apparatus and projector using the devices | Yoshitaka Itoh | 2000-11-28 |
| 6152566 | Projector for modulating polarized luminous flux | — | 2000-11-28 |
| 6142634 | Projector | Yasunori Ogawa, Shinji Haba, Akitaka Yajima, Hisashi Iechika | 2000-11-07 |
| 6109751 | Projector and lighting optical system therefor | Yoshitaka Itoh | 2000-08-29 |
| 6109752 | Lighting device and projector | Yoshitaka Itoh | 2000-08-29 |
| 6092901 | Polarizing illumination device and projection display device | Tomiyoshi Ushiyama, Hisashi Iechika | 2000-07-25 |