Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6760540 | Information storage medium and apparatus for reproducing the same | Kaoru Yamamoto, Takao Sawabe, Hidehiro Ishii, Tokihiro Takahashi | 2004-07-06 |
| 6687211 | Information record medium on which audio information differing in recording methods are recorded and apparatus for reproducing the same | Takao Sawabe, Kaoru Yamamoto, Hidehiro Ishii, Tokihiro Takahashi, Yoshinori Hasegawa | 2004-02-03 |