Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6768091 | Optical pick-up device with a light amount detecting device | Takahiro Yamamoto, Kenji Takahashi | 2004-07-27 |
| 5291345 | Apparatus for applying magnetic field and magneto-optical disk storage having such apparatus | Yoshiaki Umeda, Hiroo Shimegi, Manabu Ogura, Akira Nikaido, Fumio Sakamoto | 1994-03-01 |