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 51–75 of 84 patents

Patent #TitleCo-InventorsDate
6234930 Transmission and vehicle using same Satoru Kaneko, Yutaka Matsunobu 2001-05-22
6223842 Hybrid vehicle 2001-05-01
6198256 Control apparatus for a synchronous generator system and a hybrid-type electric vehicle using it Taizou Miyazaki, Satoru Kaneko, Kazuyoshi Sasazawa, Sanshiro Obara, Nobunori Matsudaira 2001-03-06
6142907 Power transmission apparatus for an automobile Toshimichi Minowa, Toshiyuki Innami, Yuzo Kadomukai 2000-11-07
6053833 Transmission, and vehicle and bicycle using the same 2000-04-25
6008617 Motor control device for high frequency AC driven motor Satoru Kaneko, Sanshiro Obara, Yuusuke Takamoto 1999-12-28
5994870 Method of estimating field pole position of synchronous motor, motor controlled, and electric vehicle Satoru Kaneko, Yuusuke Takamoto, Taizou Miyazaki, Sanshiro Obara 1999-11-30
5994881 Control apparatus for a synchronous generator system and a hybrid-type electric vehicle using it Taizou Miyazaki, Satoru Kaneko, Kazuyoshi Sasazawa, Sanshiro Obara, Nobunori Matsudaira 1999-11-30
5990657 Inverter system and control system for electric vehicle Yuusuke Takamoto, Satoru Kaneko, Fumio Tajima, Hiroshi Katada 1999-11-23
5914582 Permanent magnet synchronous motor controller and electric vehicle controller Yuusuke Takamoto, Hiroshi Katada, Sanshiro Obara 1999-06-22
5877601 Control system for electric vehicle and control method therefor in which an inverter relay is controlled at the time of its re-closing after being disconnected Sanshiro Obara, Hiroshi Katada, Nobunori Matsudaira, Eiichi Ohtsu 1999-03-02
5877607 Electric motor controller capable of performing stable current control during load disturbance and/or a regenerating mode Yuusuke Takamoto, Taizou Miyazaki, Satoru Kaneko, Sanshiro Obara 1999-03-02
5841263 Frequency dependent current control system for an AC motor Satoru Kaneko, Sanshiro Obara, Yuusuke Takamoto 1998-11-24
5726551 Battery charging device having time shared charging cycle Taizou Miyazaki, Satoru Kaneko, Tatsuo Horiba 1998-03-10
5726890 Control apparatus for electric vehicle Yuusuke Takamoto, Sanshiro Obara, Satoru Kaneko 1998-03-10
5677604 Control system and control method for electric automobile Nobuyoshi Mutoh, Satoru Kaneko, Sanshiro Obara 1997-10-14
5650700 Electric vehicle torque controller Nobuyoshi Mutoh, Taizou Miyazaki, Tsutomu Ohmae, Sanshiro Obara 1997-07-22
5631819 Power converter Takashi Ikimi, Hironori Ohashi, Yuusuke Takamoto, Seiji Ishida, Sanshiro Obara 1997-05-20
5610483 Control equipment for electric vehicle and control method thereof Sanshiro Obara, Hiroyuki Yamada, Nobunori Matsudaira 1997-03-11
5583406 Control method and system for regeneration braking of an electric vehicle Nobuyoshi Mutoh, Satoru Kaneko, Tsutomu Ohmae 1996-12-10
5549172 Electric vehicle drive system and drive method Nobuyoshi Mutoh, Taizou Miyazaki, Fumio Tajima, Tsutomu Ohmae 1996-08-27
5534764 Vehicle driving control system having function for suppressing vibration Nobuyoshi Mutoh, Sanshiro Obara 1996-07-09
5532571 Control apparatus for induction motor Nobuyoshi Mutoh 1996-07-02
5481460 Controller for electric vehicle Shigeki Morinaga, Kazuo Tahara, Hirohisa Yamamura, Kenzo Kajiwara, Hiroyuki Yamada +2 more 1996-01-02
5481168 Electric vehicle torque controller Nobuyoshi Mutoh, Taizou Miyazaki, Tsutomu Ohmae, Sanshiro Obara 1996-01-02