Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7406249 | Disk media, and method of and device for recording and playing back information on or from a disk media | Tadashi Kasezawa, Masato Nagasawa, Yoshihiro Kiyose, Hiroyuki Ohata, Hidetoshi Mishima +1 more | 2008-07-29 |
| 7212728 | Disk media, and method of and device for recording and playing back information on or from a disk media | Tadashi Kasezawa, Masato Nagasawa, Yoshihiro Kiyose, Hiroyuki Ohata, Hidetoshi Mishima +1 more | 2007-05-01 |
| 6539164 | Disk media, and method of and device for playing back information on or from a disk media | Tadashi Kasezawa, Masato Nagasawa, Yoshihiro Kiyose, Hiroyuki Ohata, Hidetoshi Mishima +1 more | 2003-03-25 |
| 5949953 | Disk media, and method of and device for recording and playing back information on or from a disk media | Tadashi Kasezawa | 1999-09-07 |
| 5808746 | Photodetector apparatus | Musubu Koishi, Manabu Yasukawa, Hirotoshi Terada | 1998-09-15 |
| 5614708 | Optical feedback photodetection apparatus | Musubu Koishi, Akira Takeshima | 1997-03-25 |