Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6674494 | Liquid crystal optical element and test method for its boundary layer | Noriko Suehiro | 2004-01-06 |
| 6551670 | Chiral nematic liquid crystal composition and liquid crystal optical element | Shinya Tahara | 2003-04-22 |
| 6122021 | Liquid crystal display element and a projection type liquid crystal display apparatus | Yoshinori Hirai, Tomoki Gunjima, Masanori Yuki, Masaya Kunigita, Yukio Yoshikawa +1 more | 2000-09-19 |
| 6017466 | Liquid crystal optical element, liquid crystal display element and a projection type liquid crystal display apparatus | Yohsuke Fujino, Yoshinori Hirai | 2000-01-25 |
| 6018378 | Liquid crystal/polymer composite with high optical anisotropy and low dielectric anisotropy to lower hysteresis exhibiting transparent and light scattering states | Yoshinori Hirai, Tomoki Gunjima, Masanori Yuki, Masaya Kunigita, Yukio Yoshikawa +1 more | 2000-01-25 |
| 5858268 | Liquid crystal optical element, a liquid crystal display element and a projection type liquid crystal display apparatus | Hiroshi Kumai | 1999-01-12 |
| 5776364 | Liquid crystal optical element, a method for producing the same and a projection type liquid crystal display apparatus | Kazuhiko Yamada, Hiroshi Kumai | 1998-07-07 |
| 5379137 | Liquid crystal display element and a projection type liquid crystal display apparatus | Yoshinori Hirai, Tomoki Gunjima | 1995-01-03 |
| 5331446 | Liquid crystal optical element and a laser projection apparatus using polymer dispersed liquid crystal | Yoshinori Hirai, Hiroshi Kumai, Takehiko Nishiyama, Tsuneo Wakabayashi | 1994-07-19 |
| 5283675 | Liquid crystal display element with electrode having concave-convex surface at liquid crystal side | Yoshiharu Ooi, Yoshinori Hirai, Tsuneo Wakabayashi | 1994-02-01 |
| 5235445 | Liquid crystal optical element with liquid crystal in polymer matrix with particular modulus of elasticity | Yoshinori Hirai, Hiroshi Kumai, Tomoki Gunjima | 1993-08-10 |
| 5216531 | Projection type active matrix polymer dispersed liquid crystal display apparatus with particles of liquid crystal material randomly oriented | Yoshinori Hirai, Tomoki Gunjima, Yoshiharu Ooi | 1993-06-01 |
| 5196952 | Liquid crystal display element and a projection type liquid crystal display apparatus | Yoshinori Hirai, Tomoki Gunjima | 1993-03-23 |
| 5162934 | Method of manufacturing liquid crystal display element | Tomoki Gunjima, Hiroshi Kumai | 1992-11-10 |
| 5103327 | Active matrix liquid crystal display element and a projection type active matrix liquid crystal display apparatus | Yoshinori Hirai, Tomoki Gunjima, Hiroshi Kumai | 1992-04-07 |