NK

Naoki Kumagai

FC Fuji Electric Co.: 36 patents #29 of 2,643Top 2%
FC Fuji Electric Device Technology Co.: 4 patents #12 of 205Top 6%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
AM Amp: 2 patents #506 of 1,260Top 45%
PK Paloma Kogyo Kabushiki Kaisha: 1 patents #14 of 30Top 50%
W& Whitaker &: 1 patents #650 of 1,437Top 50%
YC Yamato Scientific Co.: 1 patents #11 of 40Top 30%
Overall (All Time): #60,693 of 4,157,543Top 2%
47
Patents All Time

Issued Patents All Time

Showing 1–25 of 47 patents

Patent #TitleCo-InventorsDate
11538902 Silicon carbide semiconductor device 2022-12-27
10770582 Semiconductor device Yusuke Kobayashi, Manabu Takei 2020-09-08
10770581 Semiconductor device Yusuke Kobayashi, Manabu Takei, Shinsuke Harada 2020-09-08
10522672 Semiconductor device 2019-12-31
10451665 Pulse current application circuit and control method thereof 2019-10-22
10147797 Silicon carbide semiconductor device and method of manufacturing silicon carbide semiconductor device Takumi Fujimoto 2018-12-04
10096680 Silicon carbide semiconductor device and method of manufacturing silicon carbide semiconductor device Takashi Tsutsumi, Yoshiyuki Sakai, Yasuhiko Oonishi, Takumi Fujimoto, Kenji Fukuda +2 more 2018-10-09
9825025 Semiconductor device and method of manufacturing semiconductor device 2017-11-21
9761705 Wide band gap semiconductor device 2017-09-12
9595608 Semiconductor device 2017-03-14
9390843 Input circuit includes a constant current circuit 2016-07-12
9349855 Wide band gap semiconductor device 2016-05-24
9318547 Wide bandgap insulated gate semiconductor device 2016-04-19
9093493 Wide bandgap insulated gate semiconductor device 2015-07-28
8217704 Gate drive device Takanori Kohama, Kazutaka Masuzawa 2012-07-10
7723817 Semiconductor device and manufacturing method thereof Hiroshi Kanemaru, Yuichi Harada, Yoshihiro IKURA, Yoshiaki Minoya 2010-05-25
7602022 Surge voltage protection diode with controlled p-n junction density gradients Hiroshi Kanemaru, Yuiichi Harada, Yoshihiro IKURA, Ryuu Saitou 2009-10-13
7476935 High power semiconductor device having a schottky barrier diode Yuuichi Harada, Shinichi Jimbo, Yoshihiro IKURA, Tatsuhiko Fujihira, Kazuhiko Yoshida 2009-01-13
7436024 Semiconductor device and method of manufacturing the same Yuuichi Harada, Hiroshi Kanemaru, Yoshihiro IKURA, Ryuu Saitou 2008-10-14
7247923 Semiconductor device having a lateral MOSFET and combined IC using the same Kazuhiko Yoshida, Takeshi Ichimura, Tatsuhiko Fujihira 2007-07-24
6977425 Semiconductor device having a lateral MOSFET and combined IC using the same Kazuhiko Yoshida, Takeshi Ichimura, Tatsuhiko Fujihira 2005-12-20
6934139 Intelligent power module Kazunori Oyabe, Naotaka Matsuda 2005-08-23
6870223 High power semiconductor device having a Schottky barrier diode Yuuichi Harada, Shinichi Jimbo, Yoshihiro IKURA, Tatsuhiko Fujihira, Kazuhiko Yoshida 2005-03-22
6570413 Driver circuit for switching device Hiroyuki Kawakami 2003-05-27
6501321 Level shift circuit 2002-12-31