Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9547218 | Lens module and portable photography device | Takehiro Takahashi, Hiroyasu Otsubo | 2017-01-17 |
| 8463003 | Biometric information acquisition apparatus, biometric authentication apparatus, light guide, and image acquisition apparatus | Hiroyasu Otsubo, Masaki Yamazaki | 2013-06-11 |
| 8027519 | Imaging module for biometrics authentication, biometrics authentication apparatus and prism | Tsuyoshi Maro, Akihiko Soya, Takashi Sugiyama, Masaki Yamazaki | 2011-09-27 |
| 7820968 | Image acquisition apparatus, conversion apparatus and image acquisition method | Satoru Onuki | 2010-10-26 |
| 6944377 | Optical communication device and laminated optical communication module | Nobuhiro Umebayshi, Hideo Daimon, Tetsuhiko Sambei | 2005-09-13 |
| 6246640 | Magneto-optical recording medium capable of recording multiple value signals | Katsusuke Shimazaki, Masafumi Yoshihiro, Norio Ohta, Osamu Ishizaki, Satoru Ohnuki +2 more | 2001-06-12 |
| 6101153 | Magnetic head capable of generating multi-stepped external magnetic fields for magneto-optical recording device | Katsusuke Shimazaki, Masafumi Yoshihiro, Norio Ohta, Osamu Ishizaki, Satoru Ohnuki +2 more | 2000-08-08 |
| 6061307 | Magneto-optical recording medium having a plurality of magnetic layers | Katsusuke Shimazaki, Masafumi Yoshihiro, Norio Ohta, Osamu Ishizaki, Satoru Ohnuki +2 more | 2000-05-09 |
| 5408452 | Optical information recording/reproducing system including novel tracking system | Toshinori Sugiyama, Zenji Tsutsumi, Shigeru Nakamura, Masahiro Ojima | 1995-04-18 |
| 5007039 | Optical information recording/reproducing apparatus | Hitoshi Watanabe, Yasunori Kanazawa | 1991-04-09 |
| 4895758 | Magnetic recording medium | Hideo Fujiwara, Kunio Mizushima, Akira Miyake | 1990-01-23 |
| 4828925 | Magnetic disc | Akira Miyake, Hitoshi Nagatani, Tsugihiro Doi, Kunio Mizushima | 1989-05-09 |
| 4803578 | Assembly for stably mounting magnetic head on carriage | Hideo Fujiwara, Osamu Inagoya | 1989-02-07 |
| 4695910 | Recording disc cartridge having an improved hub assembly | Hiroshi Maruyama, Kunio Mizushima, Nobuhiro Umebayashi | 1987-09-22 |