Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7221637 | Multi-level optical recording medium, multi-level recording method, and multi-level reproduction method | Hiroyuki Arioka, Takashi Horai | 2007-05-22 |
| 7193949 | Method for recording data on optical recording medium, device for recording data on optical recording medium, and optical recording medium | Takashi Horai | 2007-03-20 |
| 7102969 | Multi-level optical recording medium reproducing method and reproducing device | Hiroyuki Arioka, Narutoshi Fukuzawa, Takashi Horai, Hiroshi Take, Motohiro Inoue | 2006-09-05 |
| 7082088 | Optical recording medium and optical recording method by irradiation | Hiroyuki Arioka, Takashi Horai, Shirou Ootsuki | 2006-07-25 |
| 7042824 | Optical multi-level recording medium and optical multi-level recording method | — | 2006-05-09 |
| 7022393 | Optical recording medium | Takashi Horai, Hiroyuki Arioka, Narutoshi Fukuzawa | 2006-04-04 |
| 7012870 | Optical recording method, optical recording medium and optical irradiating time controlling device | — | 2006-03-14 |
| 6956804 | Optical recording medium with recording marks having different states, and method of recording using the optical recording medium | — | 2005-10-18 |
| 6891790 | Optical recording medium, optical recording device and optical recording method | Narutoshi Fukuzawa | 2005-05-10 |
| 6699557 | Optical recording medium and optical recording method | Hiroyuki Arioka, Takashi Horai, Shirou Ootsuki | 2004-03-02 |
| 6611484 | Optical recording medium and method | — | 2003-08-26 |