Issued Patents All Time
Showing 76–100 of 111 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7440186 | Screen, a fresnel lens sheet used for the screen, and an image display apparatus using the screen | Tetsu Ohishi, Daisuke Imafuku, Koji Hirata | 2008-10-21 |
| 7436593 | Screen, fresnel lens sheet used therefor, and image display apparatus using the same | Tetsu Ohishi, Koji Hirata, Daisuke Imafuku | 2008-10-14 |
| 7425390 | Preparation of halftone phase shift mask blank | Satoshi Okazaki | 2008-09-16 |
| 7419749 | Halftone phase shift mask blank, halftone phase shift mask and their preparation | Yukio Inazuki, Satoshi Okazaki | 2008-09-02 |
| 7403335 | Screen, Fresnel lens sheet used for the same, and image display apparatus using the same | Tetsu Ohishi, Koji Hirata, Daisuke Imafuku | 2008-07-22 |
| 7362503 | Screen, Fresnel lens sheet used for the same, and image display apparatus using the same | Tetsu Ohishi, Koji Hirata, Daisuke Imafuku | 2008-04-22 |
| 7351505 | Phase shift mask blank, phase shift mask, and pattern transfer method | Yukio Inazuki, Satoshi Okazaki, Takashi Haraguchi, Yuichi Fukushima, Yoshihiro Ii +1 more | 2008-04-01 |
| 7344806 | Method of producing phase shift mask blank, method of producing phase shift mask, phase shift mask blank, and phase shift mask | Yukio Inazuki, Noriyasu Fukushima, Hideo Kaneko, Satoshi Okazaki | 2008-03-18 |
| 7329474 | Photomask blank, photomask, and method of manufacture | Yukio Inazuki, Noriyasu Fukushima, Hideo Kaneko, Satoshi Okazaki | 2008-02-12 |
| 7261421 | Optical projector and image display apparatus using the same | Tetsu Ohishi, 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 | Tetsu Ohishi, Koji Hirata, Daisuke Imafuku | 2007-07-17 |
| 7095558 | Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet | Tetsu Ohishi, Koji Hirata, Daisuke Imafuku | 2006-08-22 |
| 6806990 | Optical device and method for producing optical device | Masatoshi Ishii, Shigeru Konishi, Toru Shirasaki | 2004-10-19 |
| 6798580 | Projection type image display apparatus | Tetsu Ohishi, Satoshi Ouchi, Taro Imahase, Tomohiro Miyoshi | 2004-09-28 |
| 6462794 | Image forming unit, enlarging unit, optical parts, and image display apparatus having these components | Tetsu Ohishi, Hideo Tanide, Takesuke Maruyama, Goro Ohnishi, Takashi Iwata +1 more | 2002-10-08 |
| 6275336 | Optical isolator | Toshiaki Watanabe, Toshihiko Ryuo | 2001-08-14 |
| 6201516 | Projector, projecting system, system for sensation and method of manufacturing translucent screen | Hideo Tanide, Tetsu Ohishi | 2001-03-13 |
| 6130786 | Projection lens and image display device | Atsuo Osawa, Shigeru Mori, Naoyuki Ogura | 2000-10-10 |
| 5933280 | Projection lens and image display device | Atsuo Osawa, Shigeru Mori, Naoyuki Ogura | 1999-08-03 |
| 5926153 | Multi-display apparatus | Tetsu Ohishi, Takahiko Yoshida, Yutaka Matsuda, Hideo Tanide, Shigeru Mori +2 more | 1999-07-20 |
| 5833340 | Sensory integration system and image display device and concave mirror for use in the same system | Tetsu Ohishi, Hideo Tanide | 1998-11-10 |
| 5808704 | Rear projection type image display apparatus | Takahiko Yoshida, Kiyoshi Wada, Shigeru Mori, Tetsu Ohishi, Toshimitsu Watanabe +12 more | 1998-09-15 |
| 5659424 | Projecting lens and image display device | Atsuo Osawa, Shigeru Mori, Naoyuki Ogura | 1997-08-19 |
| 5613748 | Rear projection type image display apparatus and transmission type screen used therein | Takahiko Yoshida, Koji Hirata, Atsuo Ohsawa, Kiyoshi Wada | 1997-03-25 |
| 5590943 | Rear projection type image display apparatus and transmission type screen used therein | Takahiko Yoshida, Koji Hirata, Atsuo Osawa, Kiyoshi Wada | 1997-01-07 |