Issued Patents 1994
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353278 | Magneto-optical disk and method of manufacturing the same | Yoshiteru Murakami, Junichiro Nakayama, Akira Takahashi, Kenji Ohta, Hirotaka Toki | 1994-10-04 |
| 5347510 | Method of manufacturing a master plate where its guide groove has an inclined angle | Junji Hirokane, Junichiro Nakayama, Michinobu Mieda, Kenji Ohta | 1994-09-13 |
| 5343448 | External magnetic field device for a magnetooptical information recording and reproducing apparatus | Tomoyuki Miyake, Junichiro Nakayama, Takahiro Miyake, Kenji Ohta, Shozo Kobayashi | 1994-08-30 |
| 5338646 | Optical memory device having an improved light reflection or optical memory layer | Junichiro Nakayama, Tomoyuki Miyake, Kazuo Van, Kenji Ohta | 1994-08-16 |
| 5336531 | Magneto-optical disk and manufacturing methods thereof | Junichiro Nakayama, Kenji Ohta | 1994-08-09 |
| 5335220 | Optical recording element and driving system | Kenji Ohta, Tetsuya Inui, Akira Takahashi, Junji Hirokane, Yukinori Nishitani +2 more | 1994-08-02 |
| 5328740 | Magneto-optical recording medium and method for processing the surface | Junichiro Nakayama, Yoshiteru Murakami, Kenji Ohta | 1994-07-12 |
| 5305254 | Magneto-optic memory device | Yoshiteru Murakami, Junichiro Nakayama, Ichiro Hiramatsu, Akira Takahashi, Kenji Ohta +1 more | 1994-04-19 |
| 5303100 | Magnetic disk device with floating-type magnetic head | Junichiro Nakayama, Tomoyuki Miyake, Kenji Ohta | 1994-04-12 |
| 5278810 | Magneto-optical recording medium whereon recording is carried out with an overwriting function | Akira Takahashi, Junichiro Nakayama, Kenji Ohta | 1994-01-11 |