Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7986604 | Optical element and optical pickup device | Kazunari Tada, Youichi Ogawa, Kazuyuki Nishi | 2011-07-26 |
| 6469820 | Scanning optical system | Shigeru Sawamura, Shunta Takimoto | 2002-10-22 |
| 6429975 | Illumination optical system and projector using same | Yasumasa Sawai, Hisashi Tokumaru | 2002-08-06 |
| 6331879 | Liquid crystal projector with an illumination optical system | Yasumasa Sawai, Takashi Ohta, Hideki Nagata, Soh Ohzawa | 2001-12-18 |
| 6249502 | Optical recording head | — | 2001-06-19 |
| 6155685 | Projector | Yasumasa Sawai, Hakuzo Tani | 2000-12-05 |
| 6128120 | Scanning optical system | Shigeru Sawamura, Shunta Takimoto | 2000-10-03 |
| 6005655 | Projector capable of projecting polarized illumination light | Yasumasa Sawai | 1999-12-21 |