Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6594220 | Volume holographic memory and optical information recording/reproducing apparatus | Hajime Matsushita, Tomomitsu Kouno, Hideki Hatano, Yoshihisa Itoh, Satoru Tanaka +1 more | 2003-07-15 |
| 5420847 | Reproducing system for an optical disc | Takanori Maeda, Toru Akiyama, Noriaki Murao | 1995-05-30 |
| 4695158 | Focus error detector | Takanori Maeda | 1987-09-22 |
| 4290132 | Focus servo device for use in an optical information read-out device | — | 1981-09-15 |
| 4261646 | Beam splitter for optical player | — | 1981-04-14 |