RS

Ryouji Sato

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #3,805,609 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5343713 Active noise control apparatus for three-dimensional space Shinya Okabe, Shinichi Shimode, Masamichi Hanada, Takao Senshu, Hirokiyo Terada +3 more 1994-09-06