Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862443 | Sync signal detection apparatus for accurately synchronizing reproduced data | Kentaroh Tsuji, Shigemi Maeda, Takeshi Yamaguchi, Noriaki Sakamoto, Shigeo Terashima | 1989-08-29 |
| 4849953 | Tracking circuit for an optical information recording and reproducing apparatus | Masaru Nomura, Shigeo Terashima | 1989-07-18 |
| 4843604 | Beam controller for magneto-optical disc memory system | Tetsuo Fujiwara, Hiroshi Fuji, Takashi Iwaki, Shozou Kobayashi | 1989-06-27 |
| 4788674 | Optical disc record reproducing apparatus | Shigemi Maeda, Takeshi Yamaguchi, Shozou Kobayashi | 1988-11-29 |
| 4787076 | Optical disc tracking system with switching of tracking error signals at boundary between track guide and track address | Tetsuya Inui, Kenji Ohta, Shohichi Katoh | 1988-11-22 |
| 4785252 | Waveform processing circuit | Hiroshi Fuji, Takashi Iwaki, Tsuneo Fujiwara, Shozou Kobayashi | 1988-11-15 |
| 4782476 | Objective lens-driving unit | Yoshihiro Sekimoto, Mitsuo Ishii, Masaru Nomura | 1988-11-01 |
| 4778747 | Method of manufacturing optical memory element | Kenji Ohta, Akira Takahashi, Tetsuya Inui, Junji Hirokane | 1988-10-18 |
| 4754355 | Optical head | Akira Takahashi, Yoshiteru Murakami, Michinobu Mieda, Kazuo Van, Kenji Ohta | 1988-06-28 |
| 4721368 | Optical system in a magneto-optical memory device | Tetsuya Inui, Yoshikazu Fujii, Hideyoshi Yamaoka | 1988-01-26 |
| 4677601 | Method of forming permanent memory locations in a magnetooptic memory medium | Kenji Ohta, Akira Takahashi | 1987-06-30 |
| 4667315 | Tight beam position controlling apparatus | Yoshikazu Fujii, Tetsuya Inui, Tohru Okuda | 1987-05-19 |
| 4660190 | Optical focus position control in optical disc apparatus | Yoshikazu Fujii, Tetsuya Inui, Hideyoshi Yamaoka | 1987-04-21 |
| 4658390 | Optical focus position control in an optical memory system | Yosikazu Fujii, Tetsuya Inui, Hideyoshi Yamaoka | 1987-04-14 |
| 4573149 | Magneto-optical head assembly with improved detection means | Kenji Ohta, Akira Takahashi, Hideyoshi Yamaoka | 1986-02-25 |
| 4497006 | Magneto-optic recording/playback head assembly | Kenji Ohta, Akira Takahashi | 1985-01-29 |
| 4467383 | Magnetooptic memory medium | Kenji Ohta, Akira Takahashi | 1984-08-21 |
| 4414650 | Magneto-optic memory element | Kenji Ohta, Akira Takahashi | 1983-11-08 |