Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9241199 | Announcement broadcasting system, announcement broadcasting optical receiver used for the announcement broadcasting system, cable television broadcasting system, and optical receiver used for the cable television broadcasting system | Masayuki Abe, Shuzo Imai | 2016-01-19 |
| 4244045 | Optical multiplexer and demultiplexer | Kiyoshi Nosu, Hideki Ishio | 1981-01-06 |