Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4557566 | Spherical lens for spherically symmetrical graded refractive index distribution provided with rod clad | Keisuke Kikuchi, Junichi Shimada, Kenjiro Sakurai | 1985-12-10 |
| 4453803 | Optical waveguide for middle infrared band | Takehiko Hidaka, Junichi Shimada, Ken Kumata | 1984-06-12 |
| 4449204 | Information processing apparatus using a semiconductor laser diode | Junichi Shimada, Yoshinobu Mitsuhashi, Kenjiro Sakurai, Shuichi Mitsuzuka | 1984-05-15 |
| 4422733 | Cladded spherical lens having uneven refractive index | Keisuke Kikuchi, Junichi Shimada, Kenjiro Sakurai | 1983-12-27 |
| 4190775 | Optical memory playback apparatus | Kenjiro Sakurai, Junichi Shimada, Yoshinobu Mitsuhashi, Satoshi Ishihara, Atsuya Seko +1 more | 1980-02-26 |