Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6301569 | Optical disk, optical recorder, optical reproducer, cryptocommunication system and program license system | Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshinari Takemura | 2001-10-09 |