Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9000378 | Optical detection device, and apparatus using same | Takayuki Nishikawa | 2015-04-07 |
| 8922912 | Fresnel lens | Takayuki Nishikawa, Kimitake Okugawa, Akira Fukuoka | 2014-12-30 |
| 8810928 | Collecting lens and multi-segment lens | Takayuki Nishikawa | 2014-08-19 |