Issued Patents All Time
Showing 26–50 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6404550 | Optical element suitable for projection display apparatus | — | 2002-06-11 |
| 6394607 | Polarized light separation device, method of fabricating the same and projection display apparatus using the polarized light separation device | Toshiaki Hashizume, Yoshitaka Itoh | 2002-05-28 |
| 6315417 | Projector | Yasunori Ogawa, Jiro Ito | 2001-11-13 |
| 6309073 | Projector | Tadaaki Nakayama, Yoshitaka Itoh | 2001-10-30 |
| 6278500 | Liquid crystal device and projector display device having a specific relationship for the F-numbers of the illumination optical system | Yasunori Ogawa, Takeshi Takizawa | 2001-08-21 |
| 6268799 | Light-source lamp unit, light-source device and projection-type display apparatus and method of use | Kiyoshi Miyashita, Kazuto Shinohara, Shinji Haba, Tomiyoshi Ushiyama | 2001-07-31 |
| 6247817 | Projector | Yasunori Ogawa, Shinji Haba, Toshiaki Hashizume, Hisashi Iechika | 2001-06-19 |
| 6172815 | Dichroic prism and projection display apparatus | Toshiaki Hashizume | 2001-01-09 |
| 6142634 | Projector | Yasunori Ogawa, Shinji Haba, Toshiaki Hashizume, Hisashi Iechika | 2000-11-07 |
| 6141150 | Dichroic prism, prism unit, and projection display apparatus | Tomiyoshi Ushiyama, Yasunori Ogawa | 2000-10-31 |
| 6120152 | Projection-type display apparatus | Tadaaki Nakayama, Yoshitaka Itoh | 2000-09-19 |
| RE36850 | Projection-type display apparatus | Tadaaki Nakayama, Yoshitaka Itoh | 2000-09-05 |
| 6095653 | Projection-type display apparatus | — | 2000-08-01 |
| 6084714 | Polarizing illumination device and projection display device | Tomiyoshi Ushiyama | 2000-07-04 |
| 6072635 | Dichroic prism and projection display apparatus | Toshiaki Hashizume | 2000-06-06 |
| D420455 | Replacement lamp for projector | Shinji Haba, Tomiyoshi Ushiyama | 2000-02-08 |
| 6000802 | Projection-type display apparatus | Toshiaki Hashizume, Hisashi Iechika, Yasunori Ogawa, Shinji Haba | 1999-12-14 |
| 5978136 | Optical element, polarization illumination device, and projection display apparatus | Yasunori Ogawa, Tomiyoshi Ushiyama | 1999-11-02 |
| 5909944 | Projection-type display apparatus | Motoyuki Fujimori, Mutsuya Furuhata, Tomiyoshi Ushiyama, Terunaga Koide, Toshiaki Hashizume +3 more | 1999-06-08 |
| 5865521 | Projection-type display apparatus | Toshiaki Hashizume, Hisashi Iechika, Yasunori Ogawa, Shinji Haba | 1999-02-02 |
| 5743610 | Projection-type display apparatus | Motoyuki Fujimori, Mutsuya Furuhata, Tomiyoshi Ushiyama, Terunaga Koide, Toshiaki Hashizume +3 more | 1998-04-28 |
| 5626409 | Projection-type display apparatus | Tadaaki Nakayama, Yoshitaka Itoh | 1997-05-06 |
| 5191450 | Projection-type color display device having a driving circuit for producing a mirror-like image | Junichi Nakamura | 1993-03-02 |
| 4909601 | Projection-type color display device with light valves positioned at unequal distances from the light source | Junichi Nakamura | 1990-03-20 |
| 4850685 | Projection-type color display device | Hiroshi Kamakura, Tomio Sonehara, Takeshi Ono, Junichi Nakamura | 1989-07-25 |