Issued Patents 2004
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804043 | Non-linear optical thin film, non-linear optical device using the same, and optical switch using the same | Mitsutoshi Honda, Yuichi Sawai, Hideto Momose, Hiroyuki Akata | 2004-10-12 |
| 6801397 | Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device | Hiroki Yamamoto, Takashi Namekawa, Yasutaka Suzuki, Akira Kato, Noriyuki Takeo +4 more | 2004-10-05 |
| 6790502 | Optically functional element and production method and application therefor | Hiroki Yamamoto, Ken Takahashi, Motoyasu Terao, Toshimichi Shintani, Fumiyoshi Kirino +5 more | 2004-09-14 |
| 6792167 | Optical switch | Mitsutoshi Honda, Tatsuya Sugita, Masahiko Ando | 2004-09-14 |
| 6730384 | Nonlinear optical thin film, optical recording medium using nonlinear optical film and optical switch | Hiroki Yamamoto | 2004-05-04 |
| 6728500 | Process cartridge attachable to recording apparatus and recording apparatus | Takaaki Maekawa, Junpei Kohara | 2004-04-27 |
| 6700852 | Information recording medium with recording film with cobalt oxide crystalline particles, and information recording device including the same | Hiroki Yamamoto, Ken Takahashi, Sumio Hosaka, Motoyasu Terao, Fumiyoshi Kirino +2 more | 2004-03-02 |
| 6699602 | Amorphous magnetic recording medium, process for producing the same and magnetic recording and reproduction apparatus | Mitsutoshi Honda, Hiroki Yamamoto, Tatsumi Hirano, Tetsuo Nakazawa, Fumiyoshi Kirino +4 more | 2004-03-02 |
| 6689456 | Magnetic recording medium, a manufacturing method thereof, and a magnetic recording unit using thereof | Tetsuo Nakazawa, Yuzo Kozono, Tatsumi Hirano, Hiroki Yamamoto, Takashi Namekawa +1 more | 2004-02-10 |