Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7259803 | Resin sheet, liquid crystal cell substrate comprising the same | Yuuzou Akada, Toshiyuki Umehara, Tadaaki Harada, Yoshimasa Sakata, Hidetoshi Yoshitake | 2007-08-21 |
| 7060346 | Resin sheets, processes for producing the same, and liquid crystal displays | Toshiyuki Umehara | 2006-06-13 |
| 6818263 | Resin sheets containing dispersed particles and liquid crystal displays | Kiichi Shimodaira, Toshiyuki Umehara, Yoshimasa Sakata, Yoshihiro Kitamura, Katsuhiro Nakano | 2004-11-16 |
| 6740266 | Epoxy optical sheet and process for producing the same | Hiroshi Sugawa, Kazuhiko Tahara, Shuzo Fujiwara, Yoshimasa Sakata, Toshiyuki Umehara | 2004-05-25 |
| 6710840 | Cell substrate and liquid crystal display device in which a resin plate has a conductive layer via a transparent layer with a lower refractive index than the resin plate | Seiji Umemoto, Yoshimasa Sakata, Kiichi Shimodaira | 2004-03-23 |
| 6500518 | Epoxy optical sheet and process for producing the same | Hiroshi Sugawa, Kazuhiko Tahara, Shuzo Fujiwara, Yoshimasa Sakata, Toshiyuki Umehara | 2002-12-31 |