Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5557588 | Magnetooptical recording/reproducing apparatus with bias magnetic field generation devices for magnetic modulation recording and optical modulation recording | — | 1996-09-17 |
| 5289451 | Optical information recording/reproduction apparatus including means for detecting the type of recording medium | Takaaki Ashinuma, Shigeru Aoi, Yasuo Suzuki, Takehiko Shibata, Masaharu Tsukada +2 more | 1994-02-22 |
| 4993009 | Opto-magnetic recording apparatus with a bias magnetic field generating means movable parallel to a recording surface of a recording medium | — | 1991-02-12 |
| 4853917 | Optical tracking apparatus with photodetector disposed outside part of the effective diameter of the lens system | Osamu Koyama, Kazuo Uzuki, Shigeru Aoi | 1989-08-01 |
| 4849952 | Magnetooptical information recording apparatus having intensified magnetic flux applying means | — | 1989-07-18 |
| 4843600 | Recording head for magneto-optical information recording apparatus | Yoshikazu Miyajima | 1989-06-27 |
| 4841407 | Magnetic field generator having a plurality of coils for generating magnetic field in substantially the same space and method of driving the same | Hisatoshi Baba, Naoki Imokawa | 1989-06-20 |
| 4380393 | Grazing incidence spectrometer | Hiroshi Nagata, Kazuo Sano, Jiro Morimoto | 1983-04-19 |