RY

Ryouji Yoneyama

SI Seiko Instruments: 3 patents #474 of 1,437Top 35%
Overall (All Time): #1,583,852 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7438476 Hydraulic dynamic bearing and spindle motor Hiromitsu Gotoh, Atsushi Ohta 2008-10-21
6371650 Hydraulic dynamic bearing and spindle motor and rotary assembly provided Hiromitsu Goto, Isamu Takehara, Yukihiro Nakayama, Takafumi Suzuki, Toshiharu Kogure +4 more 2002-04-16
6307291 Hydraulic dynamic bearing and spindle motor and rotary assembly provided Tadao Iwaki, Isamu Takehara, Yukihiro Nakayama, Takafumi Suzuki, Toshiharu Kogure +4 more 2001-10-23