Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10775684 | Optical unit and projector therewith | Yasumasa Sawai, Masahiro Terada, Masayuki Imaoka | 2020-09-15 |
| 10324362 | Optical unit and projector therewith | Yasumasa Sawai, Masahiro Terada, Masayuki Imaoka | 2019-06-18 |
| 9285574 | Variable magnification projection optical system and image projection apparatus | Kazuhiko Inoue, Yusuke Imai, Katsuhiro Takamoto | 2016-03-15 |
| 8699139 | Variable-focal-length projection lens system and projection apparatus | Katsuhiro Takamoto, Kazuhiko Inoue, Kohei Wataru | 2014-04-15 |