TA

Toshiyuki Ajima

HA Hitachi Astemo: 20 patents #2 of 1,276Top 1%
HS Hitachi Automotive Systems: 12 patents #102 of 1,636Top 7%
HI Hitachi: 10 patents #4,206 of 28,497Top 15%
HC Hitachi Industrial Equipment Systems Co.: 2 patents #215 of 550Top 40%
HG HGST: 1 patents #253 of 483Top 55%
Overall (All Time): #63,939 of 4,157,543Top 2%
45
Patents All Time

Issued Patents All Time

Showing 1–25 of 45 patents

Patent #TitleCo-InventorsDate
12395108 Motor drive device and electric vehicle system Noriya NAKAO, Shun Taniguchi, Keiji Kadota 2025-08-19
12301071 Motor control device, mechatronic unit, power generation system, boost converter system, and electric vehicle system Takafumi Hara, Makoto Ito, Akeshi Takahashi 2025-05-13
12212255 Electric motor control device, vehicle, and electric motor control method Shun Taniguchi, Kentaro Matsuo, Kenichi Yoshida 2025-01-28
12170497 Inverter control device and electric vehicle system Takafumi Hara, Akihiro Ashida, Hirokazu Matsui, Kiyoshi Kuroda 2024-12-17
12149183 Inverter control device and electric vehicle system Takafumi Hara, Akihiro Ashida, Kiyoshi Kuroda, Yoshinori Aoshima 2024-11-19
12074542 Motor control device, electromechanical integrated unit, and electric vehicle system Takafumi Hara, Katsuhiro Hoshino, Noriyuki Maekawa 2024-08-27
12074551 Motor control device, electromechanical unit, electric vehicle system, and motor control method Takafumi Hara, Takaya TSUKAGOSHI, Katsuhiro Hoshino 2024-08-27
11984821 Inverter control device Takafumi Hara, Akihiro Ashida, Hirokazu Matsui 2024-05-14
11967912 Motor control device and electric brake device including the same Hiroaki Sato, Kenichiro Matsubara, Daisuke Goto 2024-04-23
11967915 Motor control device, motor control method, hybrid system, boost converter system and electric power steering system Takaya TSUKAGOSHI, Takafumi Hara, Katsuhiro Hoshino 2024-04-23
11958459 Brake system Kyoshiro ITAKURA, Kenichiro Matsubara, Daisuke Goto 2024-04-16
11932224 Brake control device and brake system Kyoshiro ITAKURA, Takahiro Ito, Kenichiro Matsubara, Daisuke Goto, Makoto Matsuura 2024-03-19
11646690 Motor control device and electric vehicle system Takafumi Hara, Midori Takaoka, Hirokazu Matsui, Akihiro Ashida 2023-05-09
11611292 Power conversion device Shigehisa Aoyagi, Kotaro Shiino 2023-03-21
11558000 Motor control device and electric vehicle system using the same Takafumi Hara, Akihiro Ashida 2023-01-17
11451179 Motor control device and brake control device Takafumi Hara, Shigehisa Aoyagi, Hiroyuki Ota, Kenichiro Matsubara 2022-09-20
11374505 Inverter device for performing a power conversion operation to convert DC power to AC power Takuya Nemoto, Taito Kikuchi 2022-06-28
11356037 Inverter control device, inverter control method, inverter control program Taizou Miyazaki, Toshisada Mitsui 2022-06-07
11325641 Control device for electric power steering apparatus and electric power steering apparatus Takafumi Hara, Mitsuo Sasaki, Yoshitaka Iwaji, Shigehisa Aoyagi, Takumi Hisazumi 2022-05-10
11228271 Control device for three-phase synchronous motor and electric power steering device using the same Takafumi Hara, Shigehisa Aoyagi, Hiroyuki Ota, Yoshitaka Sugiyama 2022-01-18
11196377 Motor drive system Midori Takaoka, Junki ISOBE, Kohei Myoen, Kazuaki Tobari, Yoshitaka Iwaji 2021-12-07
10873285 Inverter drive device and electrically driven vehicle system using the same Takafumi Hara, Katsuhiro Hoshino, Akihiro Ashida, Kazuto Oyama 2020-12-22
10826410 Inverter device and electric vehicle Junki ISOBE, Midori Takaoka, Akihiro Ashida, Hiroshi Tamura 2020-11-03
10511249 Inverter driving device, electric brake apparatus, and electric power steering apparatus Masahiro SEO, Shigehisa Aoyagi, Takafumi Hara, Masaki KASHIMA, Yawara KATO 2019-12-17
10411621 Drive device for three-phase synchronous motor Takafumi Hara, Shigehisa Aoyagi, Mitsuo Sasaki, Takumi Hisazumi 2019-09-10