Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D753521 | Current sensor | Takeshi Koshimizu | 2016-04-12 |
| D742262 | Current sensor | Takeshi Koshimizu | 2015-11-03 |
| 7441258 | Objective lens drive device and optical head device | Manabu Sakamoto | 2008-10-21 |
| 6212019 | Objective lens driving system in a optical pick-up and method of modulating the resonance frequency of its lens holder | — | 2001-04-03 |