Issued Patents All Time
Showing 26–50 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650863 | Image reading and copying using plural illumination sources having different characteristics | Tsutomu Utagawa, Shinobu Arimoto, Toshio Hayashi, Takehiko Nakai, Tetsuya Nagase +1 more | 1997-07-22 |
| 5648830 | Liquid crystal device having composition of at least two smectic compounds and one cholesteric compound | Kazuharu Katagiri, Shinjiro Okada, Junichiro Kanbe | 1997-07-15 |
| 5637253 | Chiral smectic liquid crystal compound, chain polymeric liquid crystal copolymer compound, their polymeric liquid crystal composition, a polymeric liquid crystal device which uses them, and apparatus and method which uses the same | Koichi Sato, Yomishi Toshida, Takeo Eguchi | 1997-06-10 |
| 5631723 | Image processing apparatus for determining whether an image contains a particular pattern using invisible light | Shinobu Arimoto, Katsuichi Shimizu, Yutaka Komiya, Toshio Hayashi, Takehiko Nakai +3 more | 1997-05-20 |
| 5631750 | Scattering type liquid crystal device | Nobuo Minoura, Hidetoshi Suzuki, Katsumi Kurematsu, Hideaki Mitsutake | 1997-05-20 |
| 5626797 | Non linear optical material and method for orientation thereof | Seizo Miyata, Takeshi Miyazaki | 1997-05-06 |
| 5617187 | Image reading apparatus, copying apparatus, image processing apparatus, and image processing method | Toshio Hayashi, Shinobu Arimoto, Takehiko Nakai, Tsutomu Utagawa, Tetsuya Nagase +1 more | 1997-04-01 |
| 5614125 | Polymeric liquid-crystal compound, polymeric liquid-crystal composition, and polymeric liquid-crystal device | Koichi Sato, Yomishi Toshida, Takeo Eguchi | 1997-03-25 |
| 5604614 | Liquid crystal device with one liquid crystal showing a cholesteric phase and one showing a chiral smectic phase | Kazuharu Katagiri, Shinjiro Okada, Junichiro Kanbe | 1997-02-18 |
| 5592315 | Liquid crystal device and liquid crystal apparatus | Kazuharu Katagiri, Shinjiro Okada, Junichiro Kanbe | 1997-01-07 |
| 5568283 | Optical modulation device and display apparatus with three birefringent films each acting as a half waveplate | Hideaki Mitsutake | 1996-10-22 |
| 5540858 | Display method and apparatus using chiral smectic liquid crystal | Hidetoshi Suzuki, Katsumi Kurematsu, Yomishi Toshida, Toshikazu Ohnishi, Hideaki Mitsutake +3 more | 1996-07-30 |
| 5527650 | Image forming method recording medium and visible image reproducing medium | Shuzo Kaneko, Kazuo Isaka, Yoshio Takasu | 1996-06-18 |
| 5503904 | Invisible information recorded medium | Hiroshi Tanioka, Shinobu Arimoto, Toshio Hayashi, Takehiko Nakai, Tsutomu Utagawa +2 more | 1996-04-02 |
| 5481334 | Image processing apparatus having means for detecting non-visible light, and image processing method therefor | Shinobu Arimoto, Katsuichi Shimizu, Yutaka Komiya, Toshio Hayashi, Takehiko Nakai +3 more | 1996-01-02 |
| 5475515 | Liquid crystal device having a stretched porous polymer film impregnated with a low molecular weight mesomorphic compound | Ryoji Fujiwara, Yomishi Toshida, Toshikazu Ohnishi, Koichi Sato, Takeo Eguchi +1 more | 1995-12-12 |
| 5473448 | Display device having a mesomorphic diffraction grating layer adjacent a polymer dispersed layer | Hajime Sakata, Yomishi Toshida, Toshikazu Ohnishi, Koichi Sato, Takeo Eguchi +1 more | 1995-12-05 |
| 5471281 | Image reading apparatus and copying apparatus having means for radiating visible and non-visible light, image processing apparatus having means for discriminating a specific orginal and image processing method therefor | Toshio Hayashi, Shinobu Arimoto, Takehiko Nakai, Tsutomu Utagawa, Tetsuya Nagase +1 more | 1995-11-28 |
| 5447655 | Polymeric liquid crystal copolymer compound, composition, thererof, and polymeric liquid crystal device making use of these | Koichi Sato, Yomishi Toshida, Takeo Eguchi | 1995-09-05 |
| 5392142 | Display apparatus with chiral smectic and polymer liquid crystal films, each having birefringent first state and not birefringent second state | Hideaki Mitsutake | 1995-02-21 |
| 5384069 | Polymeric liquid crystal composition and liquid crystal device | Yutaka Kurabayashi, Toshikazu Ohnishi, Yukiko Futami, Takeshi Miyazaki | 1995-01-24 |
| 5372745 | Liquid crystal device, display apparatus using same and display method using same | Hidetoshi Suzuki, Katsumi Kurematsu, Yomishi Toshida, Toshikazu Ohnishi, Hideaki Mitsutake +3 more | 1994-12-13 |
| 5339306 | Detecting interferential diffraction of a reflected beam from a polymer liquid crystal recording medium | Katsuya Oikawa, Toshikazu Ohnishi | 1994-08-16 |
| 5333021 | Projector provided with a plurality of image generators | Hideaki Mitsutake, Hidetoshi Suzuki, Katsumi Kurematsu, Nobuo Minoura | 1994-07-26 |
| 5316806 | Information memory medium and information recording/holding process making use of the medium | Koichi Sato | 1994-05-31 |