Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8573790 | Light absorbing optical element having micro-relief structure | Yutaka Hamamura, Yasutoshi Takada, Yoshiro TANI | 2013-11-05 |
| 7704402 | Optical element manufacturing method, optical element, Nipkow disk, confocal optical system and 3-D measurement device | Yutaka Hamamura, Noboru Amemiya | 2010-04-27 |