Issued Patents 1997
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691963 | Magneto-optical recording device using light-modulated technic without an initial magnetic field | Junji Hirokane, Akira Takahashi, Kenji Ohta | 1997-11-25 |
| 5679268 | Thin multi-layer circuit board and process for fabricating the same | Yasuhito Takahashi, Yasunaga Kurokawa, Kenji Iida, Masaru Sumi, Yuichiro Ohta +3 more | 1997-10-21 |
| 5680376 | Optical recording medium, and apparatus and method for recording and reproducing information on the same | Junji Hirokane, Akira Takahashi, Kenji Ohta | 1997-10-21 |
| RE35629 | Magneto-optical memory element | Yoshiteru Murakami, Akira Takahashi, Kazuo Van, Junichiro Nakayama, Kenji Ohta | 1997-10-14 |
| 5674583 | Optical recording medium and manufacturing method thereof | Junichiro Nakayama, Akira Takahashi, Kenji Ohta, Kazuo Van | 1997-10-07 |
| 5665467 | Magneto-optical recording medium | Junichiro Nakayama, Michinobu Mieda, Akira Takahashi, Kenji Ohta | 1997-09-09 |
| 5662988 | Magneto-optical recording medium | Junichiro Nakayama, Akira Takahashi, Kenji Ohta, Yoshiteru Murakami | 1997-09-02 |
| 5648162 | Magneto-optical recording medium and a method of recording and/or reproducing using the same | Junji Hirokane, Akira Takahashi, Kenji Ohta | 1997-07-15 |
| 5644566 | Magneto-optical recording medium | Junichiro Nakayama, Michinobu Mieda, Junji Hirokane, Akira Takahashi, Kenji Ohta | 1997-07-01 |
| 5643687 | Magneto-optic memory medium and a method for producing the same | Naoyasu Iketani, Junichiro Nakayama, Kenji Ohta | 1997-07-01 |
| 5637394 | Magneto-optical recording medium and method of reproducing magneto-optical information using thereof | Junsaku Nakajima, Naoyasu Iketani, Yoshiteru Murakami, Akira Takahashi, Kenji Ohta | 1997-06-10 |
| 5638111 | Optical probe element, and a recording and reproduction device using the optical probe element | Junji Hirokane, Akira Takahashi | 1997-06-10 |
| 5635977 | Optical probe element and a recording and reproduction device using the optical probe element | Junji Hirokane, Akira Takahashi | 1997-06-03 |
| 5635296 | Magneto-optical recording medium whereon overwriting is permitted by light intensity modulation | Junichiro Nakayama, Michinobu Mieda, Akira Takahashi, Kenji Ohta | 1997-06-03 |
| 5614823 | Apparatus and method for measuring head speed and opening angle using six sensors arranged in a rectangular format | Shinji Ohshima, Takashi Teraguchi | 1997-03-25 |
| 5615180 | Magneto-optical recording medium and magneto-optical recording apparatus capable of performing a light-modulation overwriting operation | Michinobu Mieda, Junichiro Nakayama, Akira Takahashi, Kenji Ohta | 1997-03-25 |
| 5600627 | Optical disk and a method for recording, reproducing, and deleting information on and from the optical disk | Junji Hirokane, Akira Takahashi, Kenji Ohta | 1997-02-04 |