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Osamu Koizumi

HI Hitachi: 3 patents #512 of 4,225Top 15%
HC Hitachi Car Engineering Co.: 1 patents #51 of 145Top 40%
Overall (2003): #24,043 of 273,478Top 9%
3
Patents 2003

Issued Patents 2003

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6661147 Electric vehicle and rotary electric machine having a divided rotor core Fumio Tajima, Yutaka Matsunobu, Shouichi Kawamata, Suetaro Shibukawa, Takashi Kobayashi 2003-12-09
6548933 Stator of rotating electric machine Takashi Yasuhara, Suetarou Shibukawa, Hiromichi Anan, Syuichi Hara, Toshiaki Ueda +4 more 2003-04-15
6528920 Permanent magnet rotary machine and electric vehicle using the same Yutaka Matsunobu, Fumio Tajima, Shouichi Kawamata, Suetaro Shibukawa 2003-03-04