YN

Yasushi Numata

NE Nec: 2 patents #5,510 of 14,502Top 40%
Overall (All Time): #2,146,028 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7366657 Voice signal processing system mounted with echo canceller and voice signal processing method Kazuhiko Koyama 2008-04-29
6088372 Time division multiplexing system for digital exchange 2000-07-11