Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656385 | Magnetic recording medium and information recording-reproduction method using the same | Akira Takahashi, Junji Hirokane, Yoshiteru Murakami, Kenji Ohta | 1997-08-12 |
| 5637394 | Magneto-optical recording medium and method of reproducing magneto-optical information using thereof | Naoyasu Iketani, Yoshiteru Murakami, Akira Takahashi, Hiroyuki Katayama, Kenji Ohta | 1997-06-10 |
| 5631096 | Magneto optical memory device | Yoshiteru Murakami, Kenji Ohta, Akira Takahashi | 1997-05-20 |
| 5615182 | Magneto-optical disk and the reproducing method thereof | Yoshiteru Murakami, Akira Takahashi, Junichiro Nakayama, Kenji Ohta | 1997-03-25 |
| 5595805 | Magneto-optical recording medium | Junichiro Nakayama, Akira Takahashi, Kenji Ohta | 1997-01-21 |
| 5477528 | Magneto-optical disk and the reproducing method thereof | Yoshiteru Murakami, Akira Takahashi, Junichiro Nakayama, Kenji Ohta | 1995-12-19 |
| 5452272 | Magneto-optical recording and reproducing device having light interrupting forming main robe and side robe light beam portions | Yoshiteru Murakami, Akira Takahashi, Kenji Ohta | 1995-09-19 |
| 5317555 | Optical head device utilizing partially overlapping light spots to read information from a readout layer | Akira Takahashi, Yoshiteru Murakami, Kenji Ohta | 1994-05-31 |
| 5305300 | Magneto optical storage device using a multi-layer film of Pt/Co laminated sections | Kenji Ohta, Akira Takahashi, Yoshiteru Murakami | 1994-04-19 |
| 5293359 | Magnetic recording and reproducing apparatus having a ferrimagnetic recording medium, a magnetic head and first and second light sources | Kenji Ohta, Akira Takahashi, Yoshiteru Murakami, Junji Hirokane | 1994-03-08 |
| 4786551 | Magnetic recording medium | Tsuyoshi Ootani, Chiaki Abe, Ikuko Wada | 1988-11-22 |