Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6338911 | Magneto-optical recording medium | Naoyasu Iketani, Michinobu Mieda, Akira Takahashi | 2002-01-15 |
| 6298018 | Optical recording and reproducing method optical recording and reproducing device, and optical recording medium | Akira Takahashi, Yoshiteru Murakami, Naoyasu Iketani, Ippei Suzuki, Shinya Hirata | 2001-10-02 |
| 6272077 | Magneto-optical recording medium having intermediate layer of in plane magnetization | Akira Takahashi, Michinobu Mieda, Naoyasu Iketani, Junsaku Nakajima, Yoshiteru Murakami +1 more | 2001-08-07 |
| 6147939 | Magneto-optical recording medium having intermediate layer of in-plane magnetization | Akira Takahashi, Michinobu Mieda, Naoyasu Iketani, Junsaku Nakajima, Yoshiteru Murakami +1 more | 2000-11-14 |
| 6128274 | Optical recording disk capable of suppressing bimetallic effects caused by thermal expansion | Michinobu Mieda, Naoyasu Iketani, Ippei Suzuki, Yoshiteru Murakami, Akira Takahashi | 2000-10-03 |
| 6122233 | Optical disk having virtually constant width recording track and optical disk apparatus | Naoyasu Iketani, Michinobu Mieda, Yoshiteru Murakami, Junji Hirokane, Akira Takahashi | 2000-09-19 |
| 6010780 | Magneto-optical memory medium | Junichiro Nakayama, Michinobu Mieda, Akira Takahashi | 2000-01-04 |
| 5982715 | Magneto-optical recording medium having a signal reproducing region of the reproducing layer larger than the record bit in the recording layer | Naoyasu Iketani, Michinobu Mieda, Ippei Suzuki, Junji Hirokane, Akira Takahashi | 1999-11-09 |
| 5889740 | Magneto-optical recording medium and magneto-optical recording method | Junichiro Nakayama, Naoyasu Iketani, Akira Takahashi | 1999-03-30 |