Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8169708 | Projecting optical unit and projecting type image display apparatus therewith | Hiroki Yoshikawa, Takanori Hisada, Koji Hirata, Naoyuki Ogura | 2012-05-01 |
| 7961400 | Projecting optical unit and projecting type image display apparatus therewith | Hiroki Yoshikawa, Takanori Hisada, Koji Hirata, Naoyuki Ogura | 2011-06-14 |
| 7697202 | Screen, fresnel lens sheet used for the same, and image display apparatus using the same | Hiroki Yoshikawa, Koji Hirata, Daisuke Imafuku | 2010-04-13 |
| 7675679 | Image display device and Fresnel lens sheet used therefor | Hiroki Yoshikawa, Takanori Hisada, Koji Hirata, Daisuke Imafuku | 2010-03-09 |
| 7670007 | Projection display, projection optical system and transmission lens or free curved lens | Takanori Hisada, Hiroki Yoshikawa, Koji Hirata, Naoyuki Ogura | 2010-03-02 |
| 7586687 | Projecting optical unit and projecting type image display apparatus therewith | Hiroki Yoshikawa, Takanori Hisada, Koji Hirata, Naoyuki Ogura | 2009-09-08 |
| 7581838 | Optical projector and image display apparatus using the same | Hiroki Yoshikawa, Koji Hirata, Daisuke Imafuku | 2009-09-01 |
| 7551352 | Image display apparatus, as well as, Fresnel lens sheet and screen to be used therein | Hiroki Yoshikawa, Takanori Hisada, Koji Hirata, Masahiko Yatsu, Daisuke Imafuku | 2009-06-23 |
| 7535648 | Projection type image display | Hiroki Yoshikawa, Takanori Hisada, Koji Hirata, Naoyuki Ogura | 2009-05-19 |
| 7529023 | Image display, Fresnel lens and screen | Daisuke Imafuku, Hiroki Yoshikawa | 2009-05-05 |
| 7467872 | Projection optical unit and projection type video display device using the unit | Takanori Hisada, Hiroki Yoshikawa, Masahiko Yatsu, Koji Hirata | 2008-12-23 |
| 7460301 | Image display apparatus, and transmissive screen and reflecting mirror used for same | Daisuke Imafuku, Hiroki Yoshikawa | 2008-12-02 |
| 7440186 | Screen, a fresnel lens sheet used for the screen, and an image display apparatus using the screen | Hiroki Yoshikawa, Daisuke Imafuku, Koji Hirata | 2008-10-21 |
| 7436593 | Screen, fresnel lens sheet used therefor, and image display apparatus using the same | Hiroki Yoshikawa, Koji Hirata, Daisuke Imafuku | 2008-10-14 |
| 7403335 | Screen, Fresnel lens sheet used for the same, and image display apparatus using the same | Hiroki Yoshikawa, Koji Hirata, Daisuke Imafuku | 2008-07-22 |
| 7362503 | Screen, Fresnel lens sheet used for the same, and image display apparatus using the same | Hiroki Yoshikawa, Koji Hirata, Daisuke Imafuku | 2008-04-22 |
| 7358934 | Field emission display apparatus with improved white balance | Toshimitsu Watanabe, Go Uchida, Masaki Nishikawa | 2008-04-15 |
| 7298080 | Display device | Yoshie Kodera, Masakazu Sagawa, Toshiaki Kusunoki, Yuichi Sawai | 2007-11-20 |
| 7271783 | Display device | Yoshie Kodera, Nobuo Masuoka, Akinori Maeda, Junichi Ikoma, Hidenao Kubota | 2007-09-18 |
| 7261421 | Optical projector and image display apparatus using the same | Hiroki Yoshikawa, Koji Hirata, Daisuke Imafuku | 2007-08-28 |
| 7245429 | Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet | Hiroki Yoshikawa, Koji Hirata, Daisuke Imafuku | 2007-07-17 |
| 7176876 | Display apparatus | Nobuaki Kabuto, Toshimitsu Watanabe, Yoshie Kodera, Mutsumi Suzuki | 2007-02-13 |
| 7095558 | Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet | Hiroki Yoshikawa, Koji Hirata, Daisuke Imafuku | 2006-08-22 |
| 7095169 | Flat panel display device | Masakazu Sagawa, Yoshie Kodera, Motoyuki Miyata, Akinori Maeda | 2006-08-22 |
| 6910775 | Projection-type video display | Taro Imahase, Satoshi Ouchi, Tomohiro Miyoshi | 2005-06-28 |