TO

Tsutomu Ohmae

HI Hitachi: 13 patents #3,142 of 28,497Top 15%
HC Hitachi Automotive Engineering Co.: 2 patents #95 of 314Top 35%
Sharp Kabushiki Kaisha: 1 patents #6,861 of 10,731Top 65%
Overall (All Time): #328,539 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5821588 Transistor and semiconductor device 1998-10-13
5650700 Electric vehicle torque controller Nobuyoshi Mutoh, Taizou Miyazaki, Ryoso Masaki, Sanshiro Obara 1997-07-22
5583406 Control method and system for regeneration braking of an electric vehicle Nobuyoshi Mutoh, Satoru Kaneko, Ryoso Masaki 1996-12-10
5549172 Electric vehicle drive system and drive method Nobuyoshi Mutoh, Ryoso Masaki, Taizou Miyazaki, Fumio Tajima 1996-08-27
5481168 Electric vehicle torque controller Nobuyoshi Mutoh, Taizou Miyazaki, Ryoso Masaki, Sanshiro Obara 1996-01-02
5414339 Electric vehicle control system Ryoso Masaki, Nobuyoshi Mutoh, Toshiaki Okuyama 1995-05-09
5355749 Control apparatus and control method for motor drive vehicle Sanshiro Obara, Ryoso Masaki, Toshiaki Okuyama, Keigo Naoi, Makoto Shioya 1994-10-18
5309073 Electric vehicle control device Satoru Kaneko, Ryoso Masaki, Sanshiro Obara, Yuusuke Takamoto, Hirohisa Yamamura 1994-05-03
4926960 Electric power steering apparatus for vehicle Hisatugu Ishikura, Kazuo Tahara, Toshimi Abukawa, Katsuji Marumoto, Toshiyuki Koterazaka +5 more 1990-05-22
4875539 Electric power steering control system Toshimi Abukawa, Kazuo Tahara, Katsuji Murumoto, Toshiyuki Koterazawa, Mitsuyuki Hombu +9 more 1989-10-24
4869334 Electric motor-driven power steering apparatus Katsuji Marumoto, Toshiyuki Koterazawa, Kazuaki Tobari 1989-09-26
4865148 Vehicle height control apparatus responsive to power steering operation Katsuji Marumoto, Kazuo Tahara, Hisatugu Ishikura, Hirohisa Yamamura, Toru Tatsuzaki +5 more 1989-09-12
4584528 Speed detecting method and apparatus Toshihiko Matsuda, Makoto Tachikawa 1986-04-22
4500820 Protective control apparatus for electrical vehicle Yasuo Noto, Shotaro Naito 1985-02-19
4218730 Transistor switching apparatus for use in the control of a D.C. load Katsuji Marumoto 1980-08-19