Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663935 | Disk-like multilayer information recording medium and production method thereof | Toshiyuki Kashiwagi, Takeshi Yamasaki, Tomomi Yukumoto | 2003-12-16 |
| 6613396 | Optical disc and method for manufacturing same | Masato Nishida, Tetsuhiro Sakamoto, Toshiyuki Kashiwagi | 2003-09-02 |
| 6512735 | Optical disk having recording capacity of about at least 15 GB | Minoru Takeda | 2003-01-28 |