Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5643687 | Magneto-optic memory medium and a method for producing the same | Hiroyuki Katayama, Junichiro Nakayama, Kenji Ohta | 1997-07-01 |
| 5637394 | Magneto-optical recording medium and method of reproducing magneto-optical information using thereof | Junsaku Nakajima, Yoshiteru Murakami, Akira Takahashi, Hiroyuki Katayama, Kenji Ohta | 1997-06-10 |