KY

Koichi Yahata

HS Hitachi Automotive Systems: 8 patents #192 of 1,636Top 15%
HI Hitachi: 5 patents #7,555 of 28,497Top 30%
HA Hitachi Astemo: 3 patents #267 of 1,276Top 25%
📍 Hitachinaka, JP: #312 of 2,447 inventorsTop 15%
Overall (All Time): #283,807 of 4,157,543Top 7%
16
Patents All Time

Issued Patents All Time

Showing 1–16 of 16 patents

Patent #TitleCo-InventorsDate
12257910 Power conversion apparatus Takeshi IKUYAMA, Shinichirou HIDA, Yawara KATO 2025-03-25
11757444 Semiconductor element drive device and power conversion apparatus Hiroshi Suzuki, Masaki Shiraishi 2023-09-12
11671089 Load driver Takeshi IKUYAMA 2023-06-06
10840800 Power conversion device Satoshi Hiranuma 2020-11-17
9964579 Voltage detection apparatus Hiroaki Igarashi, Masayoshi Kashihara, Tatsuya Hatakeyama, Hideyuki Sakamoto 2018-05-08
9065443 Inverter drive device Hiroki Shimano, Yoshio Akaishi, Yasuo Noto 2015-06-23
8971079 Inverter device Tetsuro Tateyama, Seiji Funaba, Yasuo Noto, Hiroki Shimano 2015-03-03
8970155 Power inverter Seiji Funaba, Yasuo Noto, Masashige Tsuji, Keiji Kunii, Shinichiro Hida 2015-03-03
8791681 Electric power conversion system Yoshio Akaishi, Yasuo Noto, Seiji Funaba, Masashige Tsuji 2014-07-29
8471507 Electric power conversion system and electric power conversion device Yoshio Akaishi, Yasuo Noto, Hirokazu Matsui 2013-06-25
8228700 Power conversion device Masashige Tsuji, Yoshio Akaishi 2012-07-24
8040088 Power inverter Hiroshi Katayama, Masashige Tsuji, Takashi Fujimoto, Hiroaki Igarashi 2011-10-18
7859105 Power converter, power system provided with same, and mobile body Kinya Nakatsu, Masato Takahashi, Mitsufumi Iwanaka, Ryuichi Saito, Haruki Hamada 2010-12-28
7719838 Power inverter Kenichiro Nakajima, Haruki Hamada, Hideki Homma, Hideyo Suzuki 2010-05-18
7561429 Power converter unit Seigo Yukutake, Yoshio Akaishi 2009-07-14
7561448 Power inverter Hiroshi Katayama, Masashige Tsuji, Takashi Fujimoto, Hiroaki Igarashi 2009-07-14