Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819648 | Optical sample and method of writing and reading information on the same | Junji Tominaga, Nobufumi Atoda, Hiroshi Fuji, Hiroyuki Katayama | 2004-11-16 |
| 6804822 | Magnetic recording medium and magnetic recording apparatus using same | Junichi Sato, Kosuke Watanabe, Kunio Kojima, Hiroyuki Katayama, Hiroshi Fuji | 2004-10-12 |
| 6687216 | Cartridge in which disk is stored | Hiroshi Nakashima, Noriaki Kitani, Takao Enomoto, Hiroyoshi Takagi, Hikaru Mizutani +1 more | 2004-02-03 |