RM

Ryoso Masaki

HI Hitachi: 66 patents #126 of 28,497Top 1%
HC Hitachi Industrial Equipment Systems Co.: 17 patents #12 of 550Top 3%
HC Hitachi Powdered Metals Co.: 7 patents #19 of 246Top 8%
JC Japan Servo Co.: 6 patents #18 of 161Top 15%
HA Hitachi Appliances: 4 patents #13 of 109Top 15%
HC Hitachi Cable: 3 patents #224 of 1,086Top 25%
HC Hitachi Automotive Engineering Co.: 3 patents #60 of 314Top 20%
HC Hitachi Car Engineering Co.: 2 patents #204 of 465Top 45%
NS Nidec Servo: 1 patents #45 of 83Top 55%
Overall (All Time): #20,691 of 4,157,543Top 1%
84
Patents All Time

Issued Patents All Time

Showing 76–84 of 84 patents

Patent #TitleCo-InventorsDate
5467275 Control apparatus for electric vehicle Yuusuke Takamoto, Sanshiro Obara, Satoru Kaneko 1995-11-14
5414339 Electric vehicle control system Nobuyoshi Mutoh, Tsutomu Ohmae, Toshiaki Okuyama 1995-05-09
5355749 Control apparatus and control method for motor drive vehicle Sanshiro Obara, Toshiaki Okuyama, Tsutomu Ohmae, Keigo Naoi, Makoto Shioya 1994-10-18
5357181 Failure detection method for electric vehicles and fail-safe control method using this method Nobuyoshi Mutoh, Tsutomu Omae, Sanshiro Obara, Shotaro Naito 1994-10-18
5345155 Control system for electric vehicle Yuusuke Takamoto, Sanshiro Obara, Hirohisa Yamamura, Hiroyuki Yamada 1994-09-06
5309073 Electric vehicle control device Satoru Kaneko, Sanshiro Obara, Tsutomu Ohmae, Yuusuke Takamoto, Hirohisa Yamamura 1994-05-03
5304912 Control apparatus for induction motor Kenzo Kajiwara, Hiroshi Hamano, Hirohisa Yamamura 1994-04-19
5239490 Device for detecting rotation of rotary shaft and rotation controlling apparatus using the same Toshiyuki Koterazawa, Kazuo Tahara, Kunio Miyashita, Yoshikazu Hoshi, Tadashi Takahashi +1 more 1993-08-24
4983875 Actuator Masahiro Kayama, Hiroshi Hayashida, Hideki Nihei, Yasunori Katayama, Hiroshi Nagase +2 more 1991-01-08