HY

Hirohisa Yamamura

HI Hitachi: 19 patents #1,906 of 28,497Top 7%
HC Hitachi Automotive Engineering Co.: 4 patents #36 of 314Top 15%
Overall (All Time): #242,349 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
6414867 Power inverter Osamu Suzuki, Heikichi Kuwabara, Akio Yasukawa, Mitsuyuki Hombu, Sanshirou Obara +1 more 2002-07-02
6410978 Semiconductor device Akio Yasukawa, Tatsuya Shigemura 2002-06-25
6271601 Wire bonding method and apparatus and semiconductor device Noriaki Yamamoto, Yukinori Taneda, Akio Yasukawa, Osamu Suzuki, Tatsuya Shigemura 2001-08-07
6166937 Inverter device with cooling arrangement therefor Osamu Suzuki, Akio Yasukawa, Nobunori Matsudaira 2000-12-26
6021040 Power storage device and power converter using same Osamu Suzuki, Kaname Sasaki, Heikichi Kuwahara 2000-02-01
5793106 Semiconductor device Akio Yasukawa, Shotaro Naito, Heikichi Kuwahara, Osamu Suzuki, Masanori Muso +1 more 1998-08-11
5481460 Controller for electric vehicle Ryoso Masaki, Shigeki Morinaga, Kazuo Tahara, Kenzo Kajiwara, Hiroyuki Yamada +2 more 1996-01-02
5345155 Control system for electric vehicle Ryoso Masaki, Yuusuke Takamoto, Sanshiro Obara, Hiroyuki Yamada 1994-09-06
5309073 Electric vehicle control device Satoru Kaneko, Ryoso Masaki, Sanshiro Obara, Tsutomu Ohmae, Yuusuke Takamoto 1994-05-03
5304912 Control apparatus for induction motor Kenzo Kajiwara, Hiroshi Hamano, Ryoso Masaki 1994-04-19
5270578 Method and system for controlling electric loads with high reliability 1993-12-14
4960178 Motor-driven power steering apparatus Toshimi Abukawa, Toshiaki Okuyama, Kazuo Tahara, Katsuji Marumoto, Toshiyuki Koterazawa +6 more 1990-10-02
4926960 Electric power steering apparatus for vehicle Hisatugu Ishikura, Kazuo Tahara, Toshimi Abukawa, Katsuji Marumoto, Toshiyuki Koterazaka +5 more 1990-05-22
4874053 Torque detecting apparatus Hiroshi Kimura, Shotaro Naito, Kunio Miyashita, Yasuo Noto, Noboru Sugiura +5 more 1989-10-17
4865148 Vehicle height control apparatus responsive to power steering operation Katsuji Marumoto, Kazuo Tahara, Hisatugu Ishikura, Toru Tatsuzaki, Toshimi Abukawa +5 more 1989-09-12
4752771 Electronic instrument panel Kouzou Katogi, Osamu Igarashi, Keiichi Tokuyama, Seiji Suda 1988-06-21
4736198 Multi-color liquid crystal display system Keiichi Tokuyama, Seiji Suda, Osamu Igarashi, Kouzo Katogi, Hiroshi Ito +2 more 1988-04-05
4708440 Liquid crystal display device Masaru Kugo, Hideyuki Ouchi, Kouzou Katogi, Osamu Igarashi, Seiji Suda +1 more 1987-11-24
4665497 Electronic odometer Shotaro Naito, Kozo Katogi 1987-05-12