Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7300687 | Retardation film and process for producing the same | Takeya Sakai, Nobuhiro Kawatsuki | 2007-11-27 |
| 7019821 | Method and apparatus for detecting blood in shell eggs | Takuo Kageyama, Hayashi Kondo, Naoki Inamoto | 2006-03-28 |
| 6743487 | Retardation film and process for producing the same | Takeya Sakai, Nobuhiro Kawatsuki | 2004-06-01 |
| 6696114 | Alignment layer and a liquid crystal display using the same | Yoshihiro Kawatsuki, Takeya Sakai | 2004-02-24 |
| 5444570 | Polarizing screen | Takashi Tsunematsu | 1995-08-22 |
| 5296965 | Reflection-type screen | Satoshi Hirofuji, Yasuhira Takeuchi | 1994-03-22 |
| 5251065 | Polarizing screen and projector using the same | — | 1993-10-05 |
| 5155622 | Polarizing optical element and device using the same | Nobuhiro Kawatsuki | 1992-10-13 |
| 4998800 | Optical low pass filter | Yasuaki Nishida, Katsuya Fujisawa, Yoshihiro Fujita, Masao Fujiwara, Shigeo Yoshikawa | 1991-03-12 |
| 4842969 | Transmittance modulation photomask, process for producing the same, and process for producing diffraction gratings using the same | Nobuhiro Kawatsuki, Katsuya Fujisawa, Ichiro Matsuzaki | 1989-06-27 |
| 4777116 | Method for manufacturing phase gratings of a combination pattern-refraction modification type | Nobuhiko Kawatsuki | 1988-10-11 |
| 4759607 | Phase gratings of a combination pattern-refraction modification type | Nobuhiko Kawatsuki | 1988-07-26 |
| 4749245 | Thin film waveguide device and manufacturing method for making same | Nobuhiko Kawatsuki, Junji Nakagawa | 1988-06-07 |
| 4504531 | Polyester, adhesives comprising the same, and laminates and laminated hollow vessels made thereof | Yoshifumi Murata, Keishiro Igi, Hiroshi Narukawa, Satoshi Bando, Shuji Kawai +1 more | 1985-03-12 |
| 4496714 | Polyester, adhesives comprising the same, and laminates and laminated hollow vessels made thereof | Yoshifumi Murata, Keishiro Igi, Hiroshi Narukawa, Satoshi Bando, Shuji Kawai +1 more | 1985-01-29 |