Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6413680 | Optical recording method, optical recording medium, and optical recording system | Osamu Watanabe, Yoshimasa Kawata, Chikara Egami, Okihiro Sugihara, Naomichi Okamoto +1 more | 2002-07-02 |