YF

Yoshihisa Fujii

Sharp Kabushiki Kaisha: 21 patents #741 of 10,731Top 7%
HS Hitachi Automotive Systems: 5 patents #333 of 1,636Top 25%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
SK Sumitomo Kinzoku Kogyo Kabushiki Kaisha: 2 patents #2 of 53Top 4%
Tdk: 1 patents #2,493 of 3,796Top 70%
HA Hitachi Astemo: 1 patents #649 of 1,276Top 55%
KT Kabushiki Kaisha Toshiba: 1 patents #13,537 of 21,451Top 65%
Basf Se: 1 patents #8,065 of 13,826Top 60%
📍 Hitachinaka, JP: #116 of 2,447 inventorsTop 5%
Overall (All Time): #97,679 of 4,157,543Top 3%
35
Patents All Time

Issued Patents All Time

Showing 1–25 of 35 patents

Patent #TitleCo-InventorsDate
11542885 Load drive circuit and load drive system Yasuo Shima, Takeo Yamashita 2023-01-03
10910815 Electronic control unit Takayasu Matsushita 2021-02-02
10393051 Internal-combustion-engine fuel injection control device Takao Fukuda, Hideyuki Sakamoto, Masahiro Toyohara, Osamu Mukaihara, Mitsuhiko Watanabe +1 more 2019-08-27
9422884 Internal combustion engine control system with injector valve timing control Takao Fukuda, Masahiro Toyohara 2016-08-23
9382891 Engine control apparatus Osamu Mukaihara 2016-07-05
9082866 Semiconductor storage device and method of manufacturing the same Takeshi Sakaguchi, Hirokazu Sugiyama, Shinichi Sotome, Tadayoshi Watanabe, Koichi Matsuno +1 more 2015-07-14
8865856 Toner resins for electronic copying purposes Hiroyasu Kanno, Torii Yoshinori, Ema Kenji 2014-10-21
8862367 Control system of internal combustion engine Masahiro Toyohara 2014-10-14
7603297 Inventory management method, system and program Tomoyuki Yoshida, Genichiro Iguchi 2009-10-13
6940884 Semiconductor laser device and fabricating method thereof Yoshinori Ohitsu, Keisuke Miyazaki 2005-09-06
6771586 Semiconductor laser element, method for manufacturing the same, and optical pickup using the same 2004-08-03
6618415 Semiconductor laser device and fabricating method thereof Yoshinori Ohitsu, Keisuke Miyazaki 2003-09-09
6502388 Engine exhaust gas cleaning system Yutaka Takaku, Toshio Ishii, Shigeru Kawamoto, Shinji Nakagawa, Minoru Oosuga 2003-01-07
6383267 Exhaust gas cleaning system for an engine Yutaka Takaku, Shigeru Kawamoto, Shinji Nakagawa, Toshio Ishii, Minoru Ohsuga 2002-05-07
6357224 Engine exhaust gas purifying apparatus Shigeru Kawamoto, Yutaka Takaku, Toshio Ishii, Shinji Nakagawa, Minoru Oosuga 2002-03-19
6176968 Method and apparatus for producing semiconductor laser device 2001-01-23
5872020 Method for producing semiconductor laser device 1999-02-16
5387804 Light emitting diode Akira Suzuki, Katsuki Furukawa, Mitsuhiro Shigeta 1995-02-07
5329141 Light emitting diode Akira Suzuki, Hajime Saito, Katsuki Furukawa, Yoshimitsu Tajima 1994-07-12
5319220 Silicon carbide semiconductor device Akira Suzuki, Katsuki Furukawa, Mitsuhiro Shigeta, Atsuko Ogura 1994-06-07
5313078 Multi-layer silicon carbide light emitting diode having a PN junction Hajime Saito, Akira Suzuki 1994-05-17
5279701 Method for the growth of silicon carbide single crystals Mitsuhiro Shigeta, Akira Suzuki, Katsuki Furukawa 1994-01-18
5243204 Silicon carbide light emitting diode and a method for the same Akira Suzuki, Katsuki Furukawa 1993-09-07
5230768 Method for the production of SiC single crystals by using a specific substrate crystal orientation Katsuki Furukawa, Akira Suzuki 1993-07-27
5216264 Silicon carbide MOS type field-effect transistor with at least one of the source and drain regions is formed by the use of a schottky contact Akira Suzuki, Katsuki Furukawa, Mitsuhiro Shigeta 1993-06-01