NS

Naoshi Sugawara

HI Hitachi: 7 patents #5,859 of 28,497Top 25%
HC Hitachi Construction Machinery Co.: 2 patents #502 of 1,234Top 45%
HP Hitachi Industrial Products: 1 patents #30 of 86Top 35%
Overall (All Time): #605,102 of 4,157,543Top 15%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
12365254 Electric vehicle and electric vehicle system Hiroaki Miyata, Junichi Yanagita, Kazuhiro Imaie 2025-07-22
8523296 Electric drive vehicle Akira Kikuchi, Takashi Ikimi, Keizo Shimada 2013-09-03
7888894 Electric motor control system, series hybrid vehicle, electric motor control apparatus, and electric motor control method Tetsuhiro Fujimoto, Yasuhiro Kiyofuji, Keizo Shimada, Akira Kikuchi, Kazuhiro Imaie 2011-02-15
7841434 Electric drive system for vehicle, electric control system for vehicle, electric drive method for vehicle Keizo Shimada, Yasuhiro Kiyofuji, Kazuhiro Imaie, Shintarou Oku, Takashi Yagyu 2010-11-30
7583036 Electrically driven vehicle Akira Kikuchi, Takashi Ikimi, Keizo Shimada 2009-09-01
7315144 AC drive apparatus, vehicle control apparatus, and power conversion method and vehicle control method Kazuhiro Imaie, Takashi Yagyu, Keizo Shimada, Yasuhiro Kiyofuji 2008-01-01
6720753 Power generation system using synchronous generator Akira Kikuchi, Motoo Futami, Yasuyuki Sugiura, Kouichi Miyazaki 2004-04-13
6567282 Apparatus and method of sensorless control for synchronous generator Akira Kikuchi, Motoo Futami, Yasuyuki Sugiura, Kouichi Miyazaki 2003-05-20