Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7755998 | Optical pickup system, optical head, optical disk apparatus, and objective lens | Yasuyuki Sugi, Mitsuhiro Miyauchi, Koichiro Wakabayashi | 2010-07-13 |
| 7619836 | Imaging lens unit | Yasuyuki Sugi | 2009-11-17 |
| 7446958 | Imaging lens unit | Yasuyuki Sugi | 2008-11-04 |
| 7389050 | Wavelength multiplexer/demultiplexing device | Tsuyoshi Maro | 2008-06-17 |
| 7079322 | Wavelength division multiplexer | Tsuyoshi Maro | 2006-07-18 |