KF

Kazuhiro Fujikawa

Sumitomo Electric Industries: 24 patents #740 of 21,551Top 4%
NC Nippon Yusoki Co.: 1 patents #9 of 37Top 25%
HM Hitachi Maxell: 1 patents #659 of 1,211Top 55%
SC Sanyo Electric Co.: 1 patents #3,644 of 6,347Top 60%
SC Sanyo Semiconductor Manufacturing Co.: 1 patents #12 of 24Top 50%
OC Olympus Optical Co.: 1 patents #1,517 of 2,334Top 65%
KK Kanto Kagaku: 1 patents #73 of 181Top 45%
Overall (All Time): #138,326 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
10665881 Redox flow battery system, pump control unit, and method for operating redox flow battery Takahiro Kumamoto, Katsuya Yamanishi 2020-05-26
9685885 Power conversion apparatus with an inverted-voltage generation circuit Takashi Ohira, Minoru Mizutani 2017-06-20
9154052 Power inverter circuit having switching elements Satoshi Hatsukawa, Nobuo Shiga, Takashi Ohira 2015-10-06
9017856 Stacked battery with electrode having break portion Suetsugu Kanai 2015-04-28
9007738 Transistor protection circuit Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Tuya Wuren 2015-04-14
8917142 Switching circuit and envelope signal amplifier Satoshi Hatsukawa, Takashi Tsuno, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada +2 more 2014-12-23
8878604 Switching circuit and envelope signal amplifier Takashi Ohira, Kazuyuki Wada, Mitsutoshi Nakata, Kazushi Sawada, Satoshi Hatsukawa +1 more 2014-11-04
8766699 Switching circuit Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Kazuya Ishioka 2014-07-01
8760223 Switching circuit Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Kazuya Ishioka 2014-06-24
8697555 Method of producing semiconductor device and semiconductor device Shin Harada, Yasuo Namikawa, Takeyoshi Masuda 2014-04-15
8643065 Semiconductor device and method for manufacturing the same Hideto Tamaso, Shin Harada, Yasuo Namikawa 2014-02-04
8624303 Field effect transistor 2014-01-07
8623752 Ohmic electrode for SiC semiconductor, method of manufacturing ohmic electrode for SiC semiconductor, semiconductor device, and method of manufacturing semiconductor device Hideto Tamaso 2014-01-07
8557711 Etching solution composition for metal films Tsuguhiro Tago 2013-10-15
8536930 Switching circuit Satoshi Hatsukawa, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Tuya Wuren +2 more 2013-09-17
8043949 Method of manufacturing silicon carbide semiconductor device 2011-10-25
7867882 Method of manufacturing silicon carbide semiconductor device Takeyoshi Masuda 2011-01-11
7759211 Method of fabricating semiconductor device Shin Harada 2010-07-20
7750377 Vertical junction field effect transistors, and methods of producing the vertical junction field effect transistors Takashi Hoshino, Shin Harada, Satoshi Hatsukawa, Kenichi Hirotsu 2010-07-06
7671387 Lateral junction field effect transistor and method of manufacturing the same Shin Harada, Kenichi Hirotsu, Satoshi Hatsukawa, Takashi Hoshino, Hiroyuki Matsunami +1 more 2010-03-02
7671388 Lateral junction field effect transistor and method of manufacturing the same Shin Harada, Kenichi Hirotsu, Satoshi Hatsukawa, Takashi Hoshino, Hiroyuki Matsunami +1 more 2010-03-02
7420232 Lateral junction field effect transistor and method of manufacturing the same Shin Harada, Kenichi Hirotsu, Satoshi Hatsukawa, Takashi Hoshino, Hiroyuki Matsunami +1 more 2008-09-02
7364978 Method of fabricating semiconductor device Shin Harada 2008-04-29
7321142 Field effect transistor Shin Harada, Hiroyuki Matsunami, Tsunenobu Kimoto 2008-01-22
7282760 Vertical junction field effect transistors, and methods of producing the vertical junction field effect transistors Takashi Hoshino, Shin Harada, Satoshi Hatsukawa, Kenichi Hirotsu 2007-10-16