Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12429657 | Optical device and manufacturing method for optical device | Kazushige Oki, Kazunobu Kobayashi, Hiroshi Hara, Eiji Tsumura, Masanobu Kawamura +4 more | 2025-09-30 |
| 10826622 | Wavelength de-multiplexing system and optical receiver module | Kazuaki Mii, Hiroshi Hara | 2020-11-03 |
| 10707970 | Wavelength de-multiplexing system and optical receiver module | Kazuaki Mii, Hiroshi Hara | 2020-07-07 |
| 10281653 | Optical receiver module and process to assemble optical receiver module | Masanobu Kawamura, Kazushige Oki, Hiroshi Hara, Yasushi Fujimura, Kazunori Tanaka +1 more | 2019-05-07 |
| 10128974 | Optical receiver module and process to assemble optical receiver module | Masanobu Kawamura, Hiroshi Hara, Michio Suzuki, Yasushi Fujimura, Kazushige Oki | 2018-11-13 |
| 9768872 | Optical transceiver outputting wavelength multiplexed signal and receiving another wavelength multiplexed signal | Shinta Kasai, Masaaki Ono | 2017-09-19 |
| 9614636 | Receiver optical module for wavelength multiplexed signal | — | 2017-04-04 |
| 9363021 | Receiver optical module including optical de-multiplexer, lenses, and photodiodes vertically arranged to each other within housing | Yasushi Fujimura | 2016-06-07 |
| 9197345 | Receiver optical module for receiving wavelength multiplexed optical signals and method to assemble the same | Hiroshi Hara, Yasushi Fujimura, Kazushige Oki | 2015-11-24 |
| 8475058 | Optical module with ceramic package reducing optical coupling stress | Yasushi Fujimura, Toshio Takagi | 2013-07-02 |
| 5195075 | Output level controlling apparatus | Takahumi Shiba, Hirokazu Inotani, Seiichi Hasebe | 1993-03-16 |
| 4761692 | Method and apparatus for data recording disc playback | Masayuki Yoshida, Izumi Ueda, Hidehiro Ishii, Takahumi Shiba | 1988-08-02 |