TY

Tsukasa Yamakawa

NT Ntn: 4 patents #361 of 1,364Top 30%
KR Krd: 1 patents #5 of 8Top 65%
Overall (All Time): #1,206,380 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
9441676 Bearing assembly including IC tag Takashi Ito, Naota Yamamoto, Hirohide Komatsu, Tsutomu Sawa 2016-09-13
8227950 Rolling bearing, spindle support structure of main motor for railway vehicle, and bearing structure Katsunori Sone, Hideji Ito, Naoaki Tsuji 2012-07-24
8044544 Rolling bearing, spindle support structure of main motor for railway vehicle, and bearing structure Katsunori Sone, Hideji Ito, Naoaki Tsuji 2011-10-25
6547443 Tapered roller bearing Kimihiro Hanai, Takashi Tsujimoto, Yasuhiro Shimizu, Shiro Ishikawa 2003-04-15