Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5087535 | Method of manufacturing photo-mask and photo-mask manufactured thereby | Junji Hirokane, Hiroyuki Katayama, Akira Takahashi, Tetsuya Inui, Kenji Ohta +3 more | 1992-02-11 |
| 5082690 | Process for manufacturing a magneto-optic disc | Hiroyuki Katayama, Junichiro Nakayama, Yoshiteru Murakami, Kenji Ohta | 1992-01-21 |
| 5081614 | Magneto-optical head utilizing central and peripheral portions of reflected light flux for different purposes | Akira Takahashi, Toshihisa Deguchi, Yoshiteru Murakami, Michinobu Mieda, Kazuo Van +2 more | 1992-01-14 |
| 5077714 | Magneto-optical recording and reproducing device using the modulation of intensities of the magnetic field and light beam | Hiroyuki Katayama, Kenji Ohta, Junichiro Nakayama, Akira Takahashi | 1991-12-31 |
| 5059473 | Optical recording medium and manufacturing method thereof | Akira Takahashi, Michinobu Mieda, Yoshiteru Murakami, Junichiro Nakayama, Kenji Ohta | 1991-10-22 |
| 4956243 | Optical memory element | Yoshiteru Murakami, Hiroyuki Katayama, Akira Takahashi, Kenji Ohta | 1990-09-11 |
| 4858212 | Recording method on magnetooptical disc with laser magnetic field | Akira Takahashi, Yoshiteru Murakami, Michinobu Mieda, Kenji Ohta | 1989-08-15 |
| 4786559 | Magnetooptical storage element | Yoshiteru Murakami, Akira Takahashi, Hiroyuki Katayama, Kenji Ohta, Michinobu Mieda | 1988-11-22 |