Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DT

Daisuke Tan — 3 Patents

Hitachi: 3 patents #10,712 of 28,497Top 40%
Hitachinaka, JP: #1,128 of 2,447 inventorsTop 50%
Overall (All Time): #1,551,807 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8164297 Power converter and motor driving system Masahiro Tobise, Hirohisa Satomi 2012-04-24
7906933 Apparatus and method for driving an induction motor Hirohisa Satomi, Shigetoshi Okamatsu, Koichi Miyazaki 2011-03-15
7710053 Motor driving system and motor driving method Hirohisa Satomi, Shigetoshi Okamatsu 2010-05-04