Issued Patents 1997
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE35629 | Magneto-optical memory element | Akira Takahashi, Kazuo Van, Junichiro Nakayama, Hiroyuki Katayama, Kenji Ohta | 1997-10-14 |
| 5676854 | Optical memory having narrowed track pitch | Tetsuya Inui, Akira Takahashi, Kenji Ohta, Michinobu Mieda | 1997-10-14 |
| 5662988 | Magneto-optical recording medium | Junichiro Nakayama, Hiroyuki Katayama, Akira Takahashi, Kenji Ohta | 1997-09-02 |
| 5657299 | Magneto-optical recording medium | Junsaku Nakajima, Akira Takahashi | 1997-08-12 |
| 5656385 | Magnetic recording medium and information recording-reproduction method using the same | Junsaku Nakajima, Akira Takahashi, Junji Hirokane, Kenji Ohta | 1997-08-12 |
| 5637394 | Magneto-optical recording medium and method of reproducing magneto-optical information using thereof | Junsaku Nakajima, Naoyasu Iketani, Akira Takahashi, Hiroyuki Katayama, Kenji Ohta | 1997-06-10 |
| 5631096 | Magneto optical memory device | Junsaku Nakajima, Kenji Ohta, Akira Takahashi | 1997-05-20 |
| 5615182 | Magneto-optical disk and the reproducing method thereof | Junsaku Nakajima, Akira Takahashi, Junichiro Nakayama, Kenji Ohta | 1997-03-25 |