AS

Akihiko Sugiyama

NE Nec: 3 patents #105 of 1,934Top 6%
📍 Tokyo, MO: #26 of 88 inventorsTop 30%
Overall (2002): #33,152 of 266,432Top 15%
3
Patents 2002

Issued Patents 2002

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6442274 Method and apparatus of canceling echoes in multi-channel — 2002-08-27
6396872 Unknown system identification method by subband adaptive filters and device thereof — 2002-05-28
6351457 Method of and apparatus for identifying unknown system — 2002-02-26