Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10283157 | Optical pickup | Seiji Hoshi, Fumitomo Yamasaki | 2019-05-07 |
| 8848501 | Detection lens, lens unit, optical pickup device, optical disc device, computer, optical disc player and optical disc recorder | Toshiyasu Tanaka, Takeshi Ohta, Shinsuke Hatanaka, Fumitomo Yamasaki | 2014-09-30 |
| 8797834 | Objective lens, optical head, optical disk device, and information processing device | Fumitomo Yamasaki, Hiroshi Shiroiwa, Yoshiaki Komma, Junichi Asada, Osamu Kajino +1 more | 2014-08-05 |
| 8473972 | Optical pickup and drive apparatus | Shinsuke Hatanaka, Toshiyasu Tanaka, Takeshi Ohta, Fumitomo Yamasaki | 2013-06-25 |
| 8432782 | Objective lens, optical head, optical disk apparatus, and information processing apparatus | Fumitomo Yamasaki, Kazuhiro Minami, Yoshiaki Komma, Junichi Asada, Osamu Kajino +1 more | 2013-04-30 |
| 8382343 | Electronic device | Seiji Hoshi, Yoshiyuki Hashimoto, Takeshi Ohta, Toshiyasu Tanaka, Yasuo Ueda +1 more | 2013-02-26 |
| 8125874 | Optical pickup device | Yasuo Ueda, Yoshiyuki Hashimoto, Toshiaki Takasu, Toshiyasu Tanaka | 2012-02-28 |