Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9548426 | Semiconductor light-emitting device | Myeong Ha KIM, Chan Mook LIM, Sang Yeob Song, Mi Jeong Yun | 2017-01-17 |
| 9190583 | White light emitting device and display apparatus | Kun Yoo Ko | 2015-11-17 |
| 8928220 | White light emitting device and display apparatus | Kun Yoo Ko | 2015-01-06 |
| 6353583 | Signal operational circuit for a multi-beam pick-up device | Ryuuji Kudoh, Tatsuaki Sakurai | 2002-03-05 |
| 6147947 | Optical disk apparatus for accessing optical disks with different substrate thicknesses | — | 2000-11-14 |
| 6128259 | Optical pickup apparatus for accurate detection of a tracking error signal | Tatsuaki Sakurai, Ryuuji Kudou | 2000-10-03 |
| 5991251 | Method and apparatus for changing laser beam power of an optical storage device for various types of compact disks | Tatsuaki Sakurai, Ryuji Kudo | 1999-11-23 |
| 5926451 | Optical disk unit having reduced wobble | — | 1999-07-20 |
| 5875155 | Optical disk unit having reduced recording and reproducing errors | — | 1999-02-23 |
| 5737292 | Optical data recording/reproducing device | Syuichi Honda | 1998-04-07 |
| 5668793 | Disk cartridge driving apparatus | Takashi Ogawa, Hideo Inuzuka | 1997-09-16 |
| 5392274 | Optical pickup device | — | 1995-02-21 |
| 5086422 | Optical disk apparatus | Toshimichi Hagiya, Junichi Watanabe, Tetsuo Kanno, Hideo Inuzuka, Makoto Yamahata +1 more | 1992-02-04 |