Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10042176 | Polarization conversion element, polarization-conversion-element manufacturing method, light-source unit, and optical device | Koji Sasaki, Masatoshi Sasaki, Nobuyuki Koike, Akio Takada, Katsuhiro Shindo +2 more | 2018-08-07 |
| 4995022 | Power supply device for hand with luminescence element | Hidetsugu Ikeda, Shoichiro Kumazawa, Satoru Yamauchi, Isato Watanabe | 1991-02-19 |