Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6938162 | Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system | Hideshi Ishihara, Yuji Takagi, Takashi Yumiba, Mamoru Shoji, Mitsuaki Oshima +6 more | 2005-08-30 |
| RE38706 | Recording defect substitution method of a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording medium | Yuji Takagi, Yoshihisa Fukushima, Shunji Ohara, Isao Satoh | 2005-02-22 |