Issued Patents All Time
Showing 51–60 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5392263 | Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens | Yoshio Aoki | 1995-02-21 |
| 5329503 | Magneto-optical disc recording/reproducing apparatus | Kiyoshi Ohmori, Katsuhiro Seo, Junichi Kudo | 1994-07-12 |
| 5287334 | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus | Kietsu Iwabuchi, Koji Sasaki, Tamotsu Yamagami, Yoshio Aoki | 1994-02-15 |
| 5200935 | Recording apparatus using magneto-optical effect including control means for inhibiting energizing of the light beam generating means in responsive to coded data | Tamotsu Yamagami | 1993-04-06 |
| 5189650 | Magneto-optical signal reproducing apparatus in which reproduced magneto-optical signal level is compared with reference signal level varied in accordance with in-phase signal | Tamotsu Yamagami, Tetsuji Kawashima | 1993-02-23 |
| 5182734 | Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics | Tetsuji Kawashima, Goro Fujita | 1993-01-26 |
| 5170385 | Recording medium with unembossed area indicating sector divisions | Susumu Senshu, Tamotsu Yamagami, Shigeaki Wachi | 1992-12-08 |
| 4998231 | Magneto-optical disk recording apparatus | Hiroshi Ogawa | 1991-03-05 |
| 4559568 | Apparatus for re-recording a digital signal on a record medium and for reproducing the same therefrom | Masato Tanaka | 1985-12-17 |
| 4348699 | Apparatus for recording and/or reproducing digital signal | Yoshikazu Tsuchiya, Masato Tanaka, Takenori Sonoda, Chiaki Kanai, Nobuhiko Watanabe | 1982-09-07 |