RH

Ryochi Honbo

DE Denso: 1 patents #6,940 of 11,792Top 60%
TR Tris: 1 patents #21 of 42Top 50%
Overall (All Time): #3,483,597 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6758881 Metal-graphite brush and production method thereof Takayoshi Otani, Osamu Takada, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita +5 more 2004-07-06