Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6950377 | Information recording method and information recording apparatus | Tsutomu Kai, Masaharu Imura | 2005-09-27 |
| 6925041 | Information recording apparatus using a mark edge recording | Tsutomu Kai, Yoshitaka Mitsui | 2005-08-02 |