Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10225012 | Device and method for data communication using visible light | Takamasa Shimada, Noriko Konno, Atsuya Yokoi | 2019-03-05 |
| 7760625 | Exchange node and exchange node control method | Kazunori Miyahara | 2010-07-20 |
| 4575844 | Digital switching system | Yasuharu Kosuge | 1986-03-11 |