Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6262964 | Disc player with objective lens arranged in a zigzag pattern | Hiroshi Yokota, Ryuichi Naito, Hiroyuki Hirano, Katsumi Ishii, Shinichi Naohara +1 more | 2001-07-17 |
| 5848049 | Disc player with parallel objective lenses | Hiroshi Yokota, Ryuichi Naito, Hiroyuki Hirano, Katsumi Ishii, Shinichi Naohara +1 more | 1998-12-08 |
| 5677904 | Disc player | Hiroshi Yokota, Ryuichi Naito, Hiroyuki Hirano, Katsumi Ishii, Shinichi Naohara +1 more | 1997-10-14 |
| 5671201 | Pulling-in circuit for PLL circuit, pulling-in method for PLL circuit, PLL circuit device and apparatus for reproducing optical disc | Hiroshi Yokota, Ryuichi Naito, Hiroyuki Hirano, Katsumi Ishii, Shinichi Naohara +1 more | 1997-09-23 |
| 5646921 | Method and apparatus for reproducing information recorded on CLV disc type record medium | Hiroshi Yokota, Ryuichi Naito, Hiroyuki Hirano, Katsumi Ishii, Shinichi Naohara +1 more | 1997-07-08 |
| 5619484 | Pulling-in circuit for PLL circuit, pulling-in method for PLL circuit, PLL circuit device and apparatus for reproducing optical disc | Hiroshi Yokota, Ryuichi Naito, Hiroyuki Hirano, Katsumi Ishii, Shinichi Naohara +1 more | 1997-04-08 |