RN

Ryoji Negi

Kawasaki: 4 patents #556 of 2,943Top 20%
SC Swcc Showa Cable Systems Co.: 2 patents #11 of 72Top 20%
KC Kawasaki Railcar Manufacturing Co.: 1 patents #15 of 38Top 40%
Overall (All Time): #947,175 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
11745774 Track displacement measurement device, track displacement measurement system, and track displacement measurement method Shingo Kuwashiro, Masayuki Mitsue, Teruhisa Nakaoka 2023-09-05
10029709 Railcar Go TATEISHI, Hiroyuki Kawasaki, Hiroyuki Sakurai, Osamu Muragishi, Yuji Kamei +1 more 2018-07-24
9831644 Connection structure between main transformer and high-voltage device box and railcar including same Hiroyuki Kawasaki, Hiroyuki Sakurai 2017-11-28
9352653 Circuit breaking unit and railcar including the same Hiroyuki Kawasaki, Hiroyuki Sakurai, Shin Imanishi, Nobuyuki Sema, Kenji Sekiguchi 2016-05-31
9225075 High voltage device system of railcar and railcar Hiroyuki Kawasaki, Hiroyuki Sakurai, Shin Imanishi, Nobuyuki Sema 2015-12-29