Issued Patents 1997
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684764 | Magneto-optical recording medium having a plurality of magnetic layers | Junji Hirokane, Junichiro Nakayama, Akira Takahashi | 1997-11-04 |
| 5683803 | Magneto-optical recording medium and method of recording and reproducing using the same | Junichiro Nakayama, Junji Hirokane, Akira Takahashi, Kenji Ohta | 1997-11-04 |
| 5676854 | Optical memory having narrowed track pitch | Tetsuya Inui, Akira Takahashi, Kenji Ohta, Yoshiteru Murakami | 1997-10-14 |
| 5673250 | Optical recording medium having pit rows on every other boundary and reproducing method thereof | Junji Hirokane, Akira Takahashi, Kenji Ohta, Shigeo Terashima | 1997-09-30 |
| 5665467 | Magneto-optical recording medium | Junichiro Nakayama, Hiroyuki Katayama, Akira Takahashi, Kenji Ohta | 1997-09-09 |
| 5666332 | Magneto-optical recording medium permitting an initializing magnetic field smaller than a recording magnetic field, and method of recording there on | Junichiro Nakayama, Junji Hirokane, Akira Takahashi | 1997-09-09 |
| 5659537 | Magneto-optical recording medium and method of reproducing from same | Junji Hirokane, Junichiro Nakayama, Akira Takahashi | 1997-08-19 |
| 5644566 | Magneto-optical recording medium | Junichiro Nakayama, Hiroyuki Katayama, Junji Hirokane, Akira Takahashi, Kenji Ohta | 1997-07-01 |
| 5640374 | Magneto-optical recording medium having intermediate layer of in-plane magnetization and method of reproducing from the medium | Junji Hirokane, Junichiro Nakayama, Akira Takahashi | 1997-06-17 |
| 5635296 | Magneto-optical recording medium whereon overwriting is permitted by light intensity modulation | Junichiro Nakayama, Hiroyuki Katayama, Akira Takahashi, Kenji Ohta | 1997-06-03 |
| 5633838 | Magneto-optical recording medium having two reproduction layers and a method for reproducing thereof | Junji Hirokane, Junichiro Nakayama, Akira Takahashi | 1997-05-27 |
| 5629908 | Magneto-optical recording medium having magnetization variable between in-plane magnetization and perpendicular magnetization | Junji Hirokane, Junichiro Nakayama, Akira Takahashi | 1997-05-13 |
| 5615180 | Magneto-optical recording medium and magneto-optical recording apparatus capable of performing a light-modulation overwriting operation | Junichiro Nakayama, Hiroyuki Katayama, Akira Takahashi, Kenji Ohta | 1997-03-25 |